I had my first outing in Sitka Gear yesterday. Conditions were quite cool in the morning at around 5C with the afternoon getting up to about 16-17C.
My choice of gear was the Ascent Pants and Jacket. In the morning I had a 200g Merino Icebreaker top under the Ascent jacket and nothing except a pair of SKINZ shorts on under the pants.
Terrain was reasonably hilly but not extreme. We covered about 6 mile constantly moving, only stopping for a brew etc.
I had the merino layer off by lunch time and hunted the rest of the day like that. The Ascent gear would have to be the most comfortable hunting wear I have worn. It breathed extremely well but was not cold in the wind. I did not find a
position that I could put myself in that was restrictive at all.
I have only hunted Elk once which was last September in
Colorado but I hunt Sambar over here in Australia a lot which is very similar style/terrain hunting. For me the Ascent gear would be perfect coupled with good quality base layer and light weight rain gear.
Hope that helps a little.