I picked this jacket up a couple days ago (in Acid Green) and while I have only used it for only 3 days so far but I know this will be a fantastic jacket. It is supremely well built (like my Heli Alpine pants from 09/10 which have held up very very well) and totally waterproof, something that is extremely important in a place like Whistler. I like a slightly baggy fit and bought this in a large (I'm 5'9, 175lbs) and love the fit. The sleeves don't bunch too much, it fits relatively slim through the body and has a drop on the back. It interfaces nicely with the pants with 2 snaps and I haven't had any issues with getting snow up anywhere. The pit zips are a little stiff and require some work with gloves on. The pit zips totally open the sleeves (unlike the Soft Shell jacket which has mesh in between). The hood is generous, but will only fit over a helmet when not fully zipped, In my experience I haven't found a jacket that does though. The chest pockets are easy to access with a pack on, but the hand pockets will likely require you to undo your waistbelt. Fully zipped up the jacket has a small fleecy section to cover the zipper and prevent your face from becoming chaffed.
The jacket wasn't cheap, most Peak Performance stuff isn't, but I think it's worth it. It is built to last and will be great value over the lifetime of the jacket. The Heli Softshell jacket is built very similarly and uses Gore-Tex 3L Soft Shell instead of Pro Shell material, both have a similar fit.