I agree with you Ben, the k5 truly is an amazing camera and while I don't do anywhere near the crazy stuff you do I love the fact I can go for a walk in scotland without having to worry about if its going to rain or now and trying to hide my camera away.
I just watched your Cotton Carrier video, nice work btw and the carrier look's nice too
.. I've done the odd bit of video stuff with the k5 (as a second/third camera long with gh2's) we are planning on making some short movie's (we are kinda new at it all) and I look forward to that.
The thing I love most about the k5 is not just its build quality and size, its the image quality from it..
As for a washable dslr, my wife spilt milk over my gx10 (k10d clone) with a non wr kit lens on it, I just washed it in the shower and both are fine lol.. I also left my gx10 in the boot of my car for days with nothing but a body cap on it. The body had acted as a moisture trap or something.. everything in the car was dry apart from the camera which was sitting there covered in water, I took the body cap of.. shoved a lens on and it was shooting away.
At my local camera club, We had a landscape photographer come in one day with his 5d mark2 and he was telling us how on one of his shoots a little splash of water killed his camera, lucky it was insured and he got a new one.. If that was me, there would be no way id get another one if it breaks that easy... pentax could have spoiled me but what's the point in getting a camera system that can't shoot next to a river without fear of it dying from a little splash?
We also had another guy (canon again) talking about his sport shooting and how he has to carry covers and all that crap to keep his camera dry... The best part though is when I took my k5 to my camera club, I was asked if it was digital and if pentax still made cameras :/