I rate this jacket as a 5 star shell for its performance in the mountains with a harness and pack. It works great in that capacity but for me it falls short in several other areas.
Good, once you figure out the Arc'teryx sizing. I stick with my recommended size (XL) for all upper garments and they layer together well. This works great when you use a clothing system but it also means that I have a shell which is huge and almost uncomfortable anytime I'm not layered up.
I think the placement and sizing of the zippers overall is good. I've been able to vent adequately while wearing a pack. (Note that I'm only discussing zippers here and not clothing systems to prevent overheating for the activity.)
The pockets on this jacket are awesome when using a pack but horrible for around town usage or when not wearing a pack. I tend to stash an extra hat, gloves, snacks etc in my shell when I go without a pack and it makes me look like a well endowed 75 year old playboy model... When wearing a harness it just seems worse.
The internal pockets are a bit small but usable however with them not being waterproof they aren't a great storage place for electronic items in certain conditions.
I love the jacket for use under a harness or a pack but unless you get a great deal I don't think it's versatile enough to justify the price. I absolutely love this shell for the mountains but when traveling I feel like I'm making huge compromises by only bringing this shell which isn't all that great for everything else.