Yes, like you, my sound sleeping on a 3/8 inch closed-cell happened a long, long time ago. Last winter (January 2013) I was packed onto an extremely remote ridgeline in southeastern Arizona and sleeping on a closed-cell pad for two weeks, while "under the stars" and also while snowstorms and nearly zero degree (Fahrenheit) temperatures tried to bite through my sleeping bag at night. That was fun, but I think it was fun because I was trying to get within bow range of a couple of world-class Coues whitetails. The thing that separates that hunt from the one last week, is that I was "off the ground" (in a sense). The closed-cell kept me levitated from the cold ground while the malfunctioned Thermarest lefty me flat on hard rock.
