I have had this jacket in western Montana now for a few winter months. It is built well and I have not had any issues with durability. Although, it is not a tuff as a heavier down parka. Overall, I love the parka and feel that it does exactly what it is supposed to do.
Pros: Light weight, warm, packable, long enough to cover hips, small enough to fit comfortably under a shell. hood makes all the difference. (Side note for those with glasses and the accompanying hood issues of not being able to rotate your head without having hoods push on your glasses frame; The hook and loop hood adjustment and large hood provide a great solution to this problem).
Cons: Could use a little more down for those real cold days, but that adds weight.
Can't beat this for the price. I own and have owned several down jackets and am most happy with this one. If you are looking for a really warm jacket to add to a tee shirt on below zero days, this is not it. But if you are willing to layer appropriately, this is it.
I am 6'3" 200lbs athletic build and the XL works perfect, the arms are even long enough.