I would take both in all honesty. Wool would be better around the camp and is natually fire spark/ember retardant whereas your NatGear fleece will look like swiss cheese if you toss another log on the fire wrong. However, the Asbell wool is not very wind resistant and if you get a strong and chilly wind you'll be wishing you had the fleece. For that reason I'd rock the wool at camp and the fleece on the hunt. If there's a MAJOR temperature swing you could double them up. I can't imagine you'd be upset either way by bringing both and keep in mind that I'm not the kind of guy to bring everything and the kitchen sink.