Some here have them, have read some decent reviews. I think the LiteHiker BedRoll is insulatex and that generally gets good reviews. As far as my personal limited experience with it, I'd try to make a Poncho Liner Under Quilt (PLUQ) first. Cheap, durable, easy to find, have no-sew diy how-to's on here. I'd give it a look.
"I ain't here for a long time, I'm here for a good time"
- George Strait