These boots are too warm for me honestly, they would work better for colder temps and environment climbing wise.
As far as if the sole is insulated I cant say yes or no. I can say they are very warm and can handle cold temps very well. Standing around in a ice park or somewhere youre in snow/ice all day these would be the warmest I ever have had. Too bad I dont live somewhere like Ouray
The boots have been used 2 times for ice climbing, with shorter approaches. I rate them a very strong 8 out of 10 condition. No holes, rips, any abrasions or threats of the integrity of the boot. The inner part of the boot is in great shape as well; i never used a super feet system or anything like that so the insides are plush, ready to shape. Boots come with standard mad rock footbed.
As far as sizing, I have a low volume long foot with normal arches. These boots would be better for someone with a bit wider than my skinny feet. But the size 12 is very on with most other sizes. It compares well w other 12 sized mtneering boots size wise (Scarpa, Sportiva, etc.)
If the condition is as stated, this is a good deal. I have used the boots for ice climbing and winter climbing in Colorado and never suffered from cold feet. The only downside I have with the boots is that they are not light-weight boots. They aren't bad, but are only a couple of ounces lighter than the same size Koflach Verticals (double plastics). Still a good deal on a good winter boot.