I got the pants right after hunting season ended. Haven't worn them hunting, but i did slip them on one day when it was about 40 degrees and the wind was blowing 15-25 mph. I couldn't feel anything thru them.
I have a Sitka Jetstream Jacket, i would say that that the fleece lining on the Axis pants is a touch thicker, but still thin. I would say if there were say a Jetstream pant (like the jacket) that i would rather have the Axis pants by far.
The Axis will provide more warmth, and the leg vents will allow you to dump heat if needed. I imagine i will wear the pants a ton, i have not decided on the jacket yet though. I wear my jetstream a ton and already have it, i was mainly wanting a pant just like what the Axis is, so glad someone finally made them.