The Edmonton Expo was very much the same. I interrogated the Pentax Canada reps' pretty hard. They played ball for quite a bit of it, but I was disappointed... I'll get to why.
They had the two FF lenses on display, I played with the 24-70 a bit. i was mostly unimpressed. But I may be pickier than most. I found the AF was quick, but compared to my Nikon 24-70 f2.8 G it was pretty slow. The AF is faster than anything Pentax has out currently (that I've used), but I think that was the biggest disappointment. I found the zoom throw was too long too, but that was personal preference I'm sure. Checking the back screen of the K3ii I was shooting on it seemed very sharp, accurate, and produced good colour. In that regards it is exactly what I expected. Overall it's exactly what I expected...and disappointed me the same way the Tamron did when I bought my Nikon 24-70 two years ago.
The 70-200 was very impressive, and I was giggling the whole time I was using it. It's bigger than the Nikon 70-200, but not by much I don't think. Weight feels about the same, and it handles very similarly to the 70-200 f2.8 VRII from Nikon. The AF was pretty quick, I'd say similar if not the same as the Nikon VRII, which is very very impressive. Even a full throw took less than a second. The image quality was very nice and sharp, good contrast, and beautiful rendering when used to snap a few portraits. It's weighty, it's big, but its no different than my day to day setup that I'm used to right now (Nikon D810 with 70-200 f2.8 VRII) and I think if the new FF camera comes out with a larger AF point array then Pentax have ticked off a very huge box for professional shooters for weddings, events, portraits...everything. $2500 is a bit much I think for this lens, $2200 I think is more suitable. But it is a great lens and targeted to professional or advanced amateur shooters.
This kind of brings me to an observation in this thread and elsewhere in the forums: people are seeing the 70-200mm f2.8 as too big and heavy to be used as a general purpose telephoto zoom, which is exactly what it is. It's also on par with the Canikon equivalents. This is the problem with FF, Pentaxians are used to small, compact bodies and lenses that are not all too heavy. FF requires these larger, heavier bodies and lenses. So to me... I think many will be disappointed overall because the cameras and lenses will be too heavy for them.
A proper strap or bag will help you adapt. I use a Peak Design Slide and a Lowpro Protactic for my kit, and the bag is probably around 12kg fully loaded. (D810, 70-200, 24-70, 50mm f1.4 ART, Profoto B1, triggers, compact light stand (gets to 7ft), umbrella, folding softbox, tablet, extra batteries and cards) and I've hiked into remote locations in British Columbia mountains without problems aside from being exhausted by the time I got back to the hotel.
As for the other brands. Yes, Canon and Nikon just had more of the same. While interesting products once you get to using them and feeling them out, they are not innovative and bring nothing new. While Pentax is playing catchup to them in flash technology and full-frame, and that is what we, as Pentaxians, would like and get excited about, the truth is they already have it, albeit without image stabilization. The V1 series from Nikon interests me, but I find it overpriced.
Olympus and Panasonic stuff gets more and more interesting with every new generation. I played with the EM5 mark II for the first time, even though it is pretty old, and I remembered why I loved my old EM5 so much. It really is a fantastic camera, and there is amazing glass for it. I love the EM1 too, such a beautiful camera that handles very well. the EVF is top notch too, but has a rolling shutter effect that would drive me nuts for action shooting.
The Fuji stuff always tempts me so much, and I had to go check out the new f2.8 zooms they came out with. I'm not going to lie... I'm seriously considering dropping Pentax for these cameras if they come out with something around 24mp or more in the future. The XT-1 is one of the best cameras I've ever shot with, and I've owned one three times. I keep handing it back because of the limited flash sync speed and the fact it still feels like a step back from my K3 because of the resolution. The lenses are all knurled metal and feel bloody fantastic. I don't know why anyone says they look cheap because they look and feel beautiful. I love the aperture ring on them too. They are so good it's not even funny. If the Pentax FF disappoints me on flash sync speed and fuji do what is rumored and release an XT-2 with upgraded flash sync speed and a 24mp sensor... it will be hard not to consider switching... that 56mm XT f1.2 lens... my god... so good you have no idea, especially the new version. Wow, just incredible. Seriously, I'd sell my remaining K5 and all my Pentax glass aside from the FA Limiteds and switch to Fuji if the FF doesn't check off all the boxes. I only use my K3 as an event camera now anyways and the Xt1 I think could beat it for that purpose.
My biggest disappointment and why my excitement for the FF has dipped is because of the answers on sync speed. Maybe it's because they don't want to reveal special specs on the FF, but the reps answers were troubling. For my work sync-speed is the #1 selling point on any camera. If I can't shoot with the hotshoe "unlocked" or with a high native sync speed then I am severely limited. I'd say 80% of my work in the past year has used flash in one form or another, so yes, it is very important to me. I realize I'm in the minority though.
The answer was the Priolite kit that was unveiled earlier with Pentax HSS support. They are very good lights on paper, but big and heavy. They remind me of the Profoto lights I already use, but with metal bodies and about 15% larger/heavier. The big problem is, North American dealer support is very, very poor. No Canadian resellers, and B&H and Adorama recently pulled the brand.
So for 645z shooters, no leaf shutters, no plan of leaf shutters, and they don't seem to understand why they need them when I was asking the reps. When I asked about higher flash sync speed with the FF or a firmware update to unlock the hot-shoe on the K3II and other models they didn't understand why I would do that. They just pointed to Priolite and the AFG flash series. Neither of which I think are a suitable option for strobists in North America. Don't get me wrong, the Pentax flashes are fine for what they are, but if you want to use high-powered strobes, especially on location, a higher sync speed is needed/required to compete with the sun in any way shape or form. Sure you could stop down, but if you want that "Dylan Patrick" headshot look you cannot do that without HSS or even the limited 1/160" flash speed. Not without a ND filter anyways, and thats a garbage solution.
Pentax either needs to up the sync speed and unlock the hot shoe (1/250 minimum in my opinion) or they need to get other brands on board for HSS. Elinchrom, Profoto, Paul C. Buff.... If they want to get the strobists.