So here's the deal. I own several First Lite pieces as I'm gearing up for some future western hunts. Most of my other hunting, however, will be whitetails in KY. The pieces I own are Kanabs, Llano, Chama, etc. Wanting to expand, either the Sanctuary system or the North Branch system with the Puffy Jacket. I know the North Branch and Puffy will be more useful in active hunting, but can they keep me warm in the treestand and duck blind in cold weather?