Actually it's really thin. I wore it out tonight and I was fine, though all I had underneath was a t-shirt.
Here in Edmonton, it wouldn't be that great for winter compared to my actual winter jacket (just a plain Eddie Bauer jacket, not *stylish*). It does look like that though, esp. because of the length.
Edit: Maybe we should make this a clothes thread and you guys could post anything cool you have, because discussing this one article of clothing could get ridiculous! ^_^