I struggle to find a place in my system for vests except for day hunts. I use the Kuiu guide vest over a layer or two of merino for mild temps. I have the kuiu super down vest but have never figured out a way to use it haha. Wish I would have bought the Kenai vest instead, probably better for hunting/hiking since it breathes better and is more durable. Curious how others use their down vests.