I was just reading the reviews of sling type straps, and ended up with this one:
Camera Straps: UltraFit Sling Strap for Men by JOBY
It arrived just today, so I've only a day long walk in the city with it (total 10 km or so), can't say much of it yet. So far, it works perfectly. Comparing to the Pentax original (and the Pentax original DIY'd to sling strap), it's gold. Got it for 30-something euros at discount somewhere. Feels really good. Well, doesn't, which is why it still feels good after the 10 with K-5 + 70-200 HSM II...
Oh I'd add one point; after the walk, removing shoes, I completely forgot I had the 2 kg hanging in my back. Leaned over, and the K5+70-200 gently and slowly slided to my side. Did not even feel they were going anywhere. That sling strap did work perfectly there - completely secured the heavy combo, and it really did not feel like I was carrying that (try carrying that on your neck for 10 kms and then see if you can forget it's there!).
Last edited by jiimaa; 03-08-2013 at 03:24 PM.
Reason: +last paragraph.