... Attack pants are awesome, with a pair of their zip off merino bottoms I have been comfortable hunting down into the 20's.
This has been my experience stand hunting Virginia. I layer under the Attacks, and use the Kuiu zip-off "puffy" pants for the sit. I've been out in the low 30s for 2-3 hours without much effort. Only thing I'd change on the puffers would be to add a fly.
Kuiu runs some pretty good discount sales, and the gear I have has held up very well so far.
I have found that their gear is still athletic cut, and I need to up-size on the jackets, but a bit more forgiving in fit with those of us that are way past our "cut" days...
The secret to the light gear is sealing out the wind, and keeping a warm layer in insulation in, without sealing the cavity into a furnace. You have to hit a balance between activity and sitting that the clothes can adapt to.
