Feel free to watch the videos here:
kada jawi - YouTube
I think the description always includes the lens that was used, and I haven't used any stabilisation gear at all. At most I was sitting (the Dayang Noraini video), in the 27mm video I was actually walking, climbing up stairs... (and I've gotten better at it).
I don't notice jello, rolling shutter etc. What little there is is masked by the movement.
And yes, including the K-5 II/IIs. Maybe if we make enough noise Pentax/Ricoh will listen and deactivate the extra crop in video mode/make it possible to use the IBIS as well as the electronic SR. Choice is good.
@kenyee: The IBIS in the older Pentaxes works well enough to eliminate quick movements even with long lenses (say 200mm). As it is the quick movements that result in jello (especially if stabilised electronically in camera or on the computer) you won't get to see it, unless you pan quickly. If you stabilise other cameras with CMOS sensor well enough you won't get to see it either, except for in the most extreme situations (unless the sensor really sucks).
Oh, and I need to stress that the jello becomes really bad when you try to stabilise the video after it was captured by the sensor (for example through the software in the camera as the K-3 does it). It captures the jello in all of its glory, and then stabilises one part of the video. Instead of having the shaky camera hide a bit of the jello, it appears amplified.