Hello all, I wanted to reach out to the experts on this matter. I live in western North Carolina where temps go well below freezing and sometimes single digits during winter nights. At least they do when im 5000 feet up. Is an UQ a must? I have been using my thermarest and a 35* bag which works for 3 seasons. I will be heading out for 5 nights in late December and am starting to second guess my set up. Have any of you done well without an UQ during low teen temps?