I just got this jacket a few days ago, but it is already performing perfectly. I didn't want a walking sleeping bag, but I wanted something I could wear on its own, or layer. Bingo, down sweater..
I have been surprised at how windproof it is, I was out walking in 20˚F weather with a 15MPH head wind with a T-shirt on underneath this "Torso-cover."
I am usually bothered by elastic cuffs, but the elastic is big enough that it doesn't cut off the circulation to my hand and yet small enough to keep the warm air in.
When zipped with the hood up, your mouth is covered pretty well, and the hood fits really well, like a nice sleeping bag hood.
Being able to fit this thing in its own pocket is pretty rad as well, come climbing season that will be useful!
Also, the DWR seems to be pretty good on this jacket as well, water beads exceptionally well. Haven't exposed it to rain yet though.