Rokwiia
WKR
I think two quilts are far better than one. I'd layer two. If I had my druthers, I'd have a down quilt next to my skin and a synthetic quilt on top of that. My moisture whould pass through the down quilt and directly meet the frigid weather in the synthetic quilt above. If that were to cause freezing, it would happen in the synthetic quilt whose insulating qualities wet (or frozen) are better than those of down.