Great, light jacket, would like pit zips
I've been using this jacket for two years now and am very satisfied with it. I use it in a variety of sports, activities and conditions, but primarily for mountaineering and backpacking.
After two years of use, the jacket is still in great shape: all the seams and high-wear areas are completely intact. Indeed the jacket still likes fairly new despite heavy use. It breaths well and is completely waterproof and I like how the pockets are high enough so as to not be caught behind my backpack waist strap.
The reason that I give the jacket a 4-star review is because I really wish it had pit-zips. Another nice addition would be a a cord that allows you to tighten the area around the neck. The jacket currently has strings allowing you to tighten the hood around the face, but when it is cold I can feel heat escaping out around my neck and it would be nice to be able to cinch this area down.
I don't have any complaints, but just feel these changes would make a rock-solid product a perfect one. If Arc'teryx made these two changes, the jacket would be an absolute 5-star product.
As a disclaimer, I am affiliated with Gore for product testing of Gore-tex products for the purpose of product review and recommendation. I do receive items from Gore for these purposes.