Well, I have someNeoprene Bare's (5mm of insulation, don't know what that is in Thinsulate grams), and although they'll keep me warm longer than I'll hunt, I don't think I'd want to be walking to far in them. They're not too bulky, I just wouldn't want to start sweating in them, and then sit for "X" hours. That's just me though. Your camo over the top idea is what I've done, just got some el cheap-o camo sweats in as big as I could find, and the ducks didn't notice. If you can read this, it should help a bit