I am curious if anyone has used the Brooks Down Sweater as a layer for treestand hunting? I have a Uncompahgre 2.0 currently but the weather was too warm where I currently hunt last season (MO, KY, IL) to use it. I know firstlite has a dedicated whitetail line but I am going on my first hunt out west this fall and have been tailoring my gear for both Midwest treestand/Western hunting. Know the Brooks Down seems to be 50/50 on likes judging by previous posts, but was wondering if layering wick,furnace, Klamath, Brooks, and then Corrugate Guide/Rain Shell would get me down to temps below 30*f comfortably?