Having froze my butt off with a Trekker pad with no holes (long sold!) I would say you'd have some issues with the ground radiating some cold. As those pads are just air and low R value, it may be no worse than a conventional inflatable pad that has no insulating properties added in. That said, I'd re-think the quilt for colder weather, or at least add in a closed cell foam pad underneath the Klymit. At the very least, a piece of Emergency blanket cut to fit the pad might help some. We use one in the tent in the winter and it makes a difference. I'd do some experimenting before taking it out on the trail and having a bad night(s).