Very very nice bag. Picked one up a few weeks ago as I did not like the fact that my Lowepro Orion Trekker did not have a place to attach my tripod, and would not carry enough camera equipment.
I also wanted something I could possibly take snowboarding with me this winter.
I am currently carrying my Rebel XTi w/battery grip, kit lens, ef 50 1.8II and EFS 10-22 in the bag. It has lots of room for all of this along with lens hoods, extra batteries, and tripod is easily secured on the bag.
I have yet to take it snowboarding yet, so I cannot comment on the water resistance of the bag, but construction seems quite good. I am 5'10 and like 200lbs and the bag is very comfortable. Even with all my camera stuff, and my laptop it barely feels like I am wearing a bag.
My main complaints are the fact that my 15.4" Toshiba Tecra laptop barely works... it fits in the pocket, but the zipper will not close around one of the corners. Also, it was kind of expensive, however not so much so in relation to other bags which are similar. I paid $160 Canadian as I didn't feel like ordering online.