The Sorel Buxtons may be okay on straight snowpack or minimal depth, but if you have to rock scramble or hit rough terrain, and In Idaho you will need harder soles or beefier Sorels - like Caribou or othe "packs". I hunted late seaons in 0 and sub-zero last year in my Sorel Caribous that have a wool liner AND I wore mid-weight wool socks. Feet were plenty warm, but I encountered some leaks on sewn seams. For deep snow, I'll still don Sorels, but waterproof or seal the seams better.
I just bit-the-bullet and purchased my first pair of Kenetrek Mountain Boots. I got the uninsulated to wear with wool socks. These are worth the price, and will be okay for light snow, but for bitter cold and snow, I'll wear packs.
You can also wear snowshoes with your Sorels and don't forget gaitors for deeper snow - I wore both last year.