The last couple of seasons I could have gone with uninsulated with no trouble but we hunt in November sometimes over 10k altitude and I'd rather not whine like a little girl and wish for the truck. I have 400, 600 and 1000 gram Cabelas leather boots that are about the same age and are well broken in with one or 2 pairs of varying weight wool socks. They replaced 2 pairs of 800 gram Lacrosse that lasted several years.
I handle my feet being too hot much better than too cold. My first day elk hunting several years ago was in 10" of snow with leaking boots and it made a lasting impression.
