In reply to monkeymark:
Spec-wise they look the part, never used these specifically, but the Vibram Mulaz sole unit is quality.
Personally, I've taken a step back from fabric/hybrid/GTX-reliant boots, especially when paired with 'to-the-toe' type lacing which, when walking and over time, I find exposes a 'flex-point' on the boot and GTX membrane which eventually breaks and gives in allowing water ingress. If this occurs, which it inevitably does, and you find yourself standing around/walking in ankle-deep snow, you're going to end up somewhat soggy! One piece leather is the way to go IME.