The "naked" Alpha/Evolve/similar stuff is probably the ultimate in moving hard, active insulation. It does have a few drawbacks for hunters— it offers zero wind protection; not a surprise when you see one in person. It's also pretty snaggy—if your 100% above treeline, it's not an issue, if you have to hike through brush to get above treeline, it definitely could be.
I've got two "naked" pieces, I've relegated them to backpacking on trails.
For hunting, I prefer a light face fabric over the Alpha/Evolve- it gives a little relief from wind and some protection when busting brush, but you still get a piece that insulates decently, move moisture and dries quickly.
I wouldn't have offered this up a couple of months ago, but if the temps are on the mild side—I'd consider an Alpha/Evolve vest as a possible option.