Once there is enough snow.... I normally use my jarbridge UQ and an air mattress. I was thinking not to bring the air mattress and just use the jarbridge and make a poncho liner UQ. What do you guys think....just as warm as the UQ and thermarest or won't work as well. I want to prepare for temps in the teens and 20s. Any thoughts or suggestions. I just want to get rid of the thermarest. Keeps slide out of position throughout the night.