I was issued 2 of these for my second trip to OIF. I fully patched them, stuck them in the bottom of my duffel bag, and never saw them again until a few years ago when I gave one to my middle son when he was in high school. I never wore either myself. I'm pretty sure that was commonplace, at least among combat formations. Instead of using a heavy coat, we'd layer up. For example, when outside the wire in winter '04-'05 I wore t-shirt and boxers, DCU, and Nomex flight suit when it got cold. I spent almost all of my waking hours outside the wire. When I was on a FOB (maybe to hit the PX for toothpaste or soap), I'd leave the Nomex in the HMMWV and pull on my field jacket liner under my DCU shirt.
Necropoosting is FUN!