STS45,
Are you using the super down pants over the top of your regular pants or as a mid layer under your pants? Haven't seen the pants in person but have the Super Down jacket. Seems they might be a little fragile to stand up as an outer layer for long.
I use them as a outer layer. I believe they are designed to be put on once you get to your spot. They would be super hot wearing them under your pants. I use them when I am sitting and glassing, at camp, and even sleeping if it is really cold.
