Update: I tested out the Sitka Incinerator Bibs/Jacket/Hat combo last night. The temperature was 6 F with 20 mph sustained winds. I sat still in a chair, as if I was in a tree stand, for 25 minutes and did not feel cold at all, other than the tops of my cheeks/eyelids. I wore merino wool thermals and a mid-weight LL Bean sweater under it. If I'd had my shemagh scarf to protect my cheeks, I would have been all set. I won't be able to give it a real field test until next season, but for now it seems this really is top of the line stuff. Importantly, it's comfortable and the pants don't make the hated "swish swish" sound.
https://www.youtube.com/watch?v=7fr5ByQo5TI
"Let's say it comes down to me and another guy, his pants are quiet and mine are swooshing all over the place!"
https://www.youtube.com/watch?v=7fr5ByQo5TI
"Let's say it comes down to me and another guy, his pants are quiet and mine are swooshing all over the place!"