I've read so often about poncho liners making great UQ's (and TQ's) that I had to check them out for myself. First of all, I had no idea what they where until I started reading about them here, and I had certainly never seen one. I stopped by my local military surplus store this past weekend to find one and see what it felt like. I must say, they felt quite thin and flimsy. Are they warmer than they look? Has anyone else had doubts about the insulating ability of a PLUQ, only to be pleasantly surprised?