forestwalker
Bushcrafter (boy, I've got a lot to say!)
1) - The boots are snow proof but not waterproof. In snow this was not a problem but on one occasion my foot went through the ice into the marsh underneath. One foot got wet in sub zero conditions but even then my foot stayed warm as long as I kept moving.
This is a problem with anything but the rubber wellie based winter boots (Nokian, Tretorn, etc).
2) - The inner boot did get damp due to condensation forming on the inside of the rubber outer boot. We were doing a lot of walking and so this may not be a problem in normal camp conditions.
This is the case with almost every system that is not very permeable (Stegers, mukluks, etc). Those who use vapour barrier based systems avoid it as well (duh). The problem is that the water vapour condenses on the inside of the outer boot, and then freezes into a layer of ice. Having two inner boots and swapping will help. I also change socks as often as possible, carrying the other set inside my clothing (tied to a cord around my neck, between the inner and mid layer, some tuck them into their belt and carry them inside their pants)
Having said this, the inner boot is removable and so it was fairly easy to dry them out overnight.
Anything but removable liners is anathema in winter; they only work if you take them indoors and use a forced air boot dryer each night.