I have also got them from here.I happened to receive some of these today. Same size as my tracker esc. They fit similarly, but the feel slightly narrower and that could be due to the rand and leather type. They're incredibly comfortable.
I wore them with some random wool socks from Mongolianstore.com. I don't know if they're camel, sheep, or yak because I didn't order them. They just came along with my wife's camel leggings, so I'm guessing they're sheep.
We went on a hike to sled today in about 33F weather. The trail was uphill for about 1.5-1.75mi and we gained about 800 ft or more. I had my 3yr old on my shoulders and we moved at a quick pace. Getting to the top, I was sweating heavily in my coat and pants, but my feet felt dry and only warm ... Not hot. After getting back and taking the boots off, the bottom of my socks were barely damp. Barely perceptible.
So, I like them. I think they'll be great for cold hunts with potential wetness.
Sidenote, where are you guys getting your camel or yak socks from? The ones (probably sheep) I received from Mongolianstore.com are great
www.ETSY.com and search for Yak Wool Socks