There's a two-part, in-depth review of it here (sorry - membership required, but I'll post the link anyway in case anyone here is a member):

http://www.backpackinglight.com/cgi-bin/...er_part_1a.html

Bottom line: positive review, really does work in many kinds of snow. Great if you have a place where you can leave a "base camp igloo" for a while (as opposed to trips where you're on the move to a different site every day).