Haven't had a chance to these in the field yet, but first impressions are.... well, 3/5 stars.
PROS: They look sweet, the materials seem high qual, and the double helix closure is nice (not sure how practical though).
CONS: The most notable thing to be aware of when buying is that these do run small (other posters have mentioned this as well). I had to return my L for XL, and they still *just* fit. Buy a size up to avoid having to pay multiple shipping fees for exchanges. Also, as another poster mentioned, there are weird stays in the cuff that run along the forearm, and while they don't get in the way, I'm not sure what they're there for.
I'm hoping these babies are nice and toasty. I'll soon find out...