Most of the kuiu stuff isn't made for sitting in a stand etc.(Except their new Proximity line) And no matter who makes it, 200 weight merino, is still 200 weight merino. Or whatever weight.
The main things I love from kuiu are the peloton 97 synthetic zip off base layer bottoms. Best thing ever!
Also like the Yukon gaiter, guide and attack pants. And the Chugach rain gear really does well.
Guide pants for when it below 30. Snow ,etc. Fleece lined, excellent dwr coating. Attacks good year round with base layer. Both have good zip vents which are a requirement for me now.
For warmth, get a couple mid weight grid fleece hoodies from almost anywhere, including kuiu.
And then add a real puffy like the Sitka Kelvin windstopper( might find on clearance right now) or a custom from goose foot gear with 6-8 oz of down fill. You need to look at how much fill is put in , not just the fill power like 700-850, etc.
Also puffy pants for sitting and glassing are incredible. I have some from Skre I scarfed up on sale. Work well.
Hands. Bring mittens. I just use fairly thin snowboard mittens. Hands roast in 10 degrees and 22 mph wind. General hunting I wear either thin nitrile work gloves, mechanix fast fits, kuiu guide gloves(decent), and the old rag wool ones.(hard to beat)