Just a quick post to let people know how this works with Pentax gear.
I got mine a few days ago and have been using it with my K-x / Tamron 17-50 combo, and it works great! I had thought that I might be restricted to using primes with it, but a sub 500g zoom is fine.
I do occasionally check that the pin hasn't worked loose from the camera, but so far so good.
A really convenient product for when a PnS is too little, and a bag of gear is too much.
I got it for $50 on Amazon as the greedy company that distributes them here in Hong Kong has priced them at over $100!
So, even though it's made in China (and well made, I should add... it's not going to fail on you with the exception of the pin perhaps loosening), my unit has had to cross the Pacific - TWICE - to get in my hands for less than half the price than if I'd bought it at a shop less than 50 miles from the factory.
Black Widow Holster : The Black Widow : Spider Holster