Mats S.wrote a review of The North Face Verto S6K Glacier GTX Boot on August 27, 2014
I recently purchased a pair of these for a Rainier climb (August) and thought they were incredibly comfortable and required minimal break in time. To me they fit small; I usually wear a size 9 shoe and wore a 10 in these boots but would have been better off with a 10.5 as I experienced a lot of discomfort on the descent. (Not the fault of the boots).
I wore a thin wool sock as I usually do but found my feet a bit chilled. I was disappointed by this as the temperatures were in the 30s and 40s during the climb. I think my feet would have been warmer in a larger boot.
I've experienced many problems with LaSportiva (both hard shell and Evos) with the design of the boot's tongue. There is a break between the area of the foot and the shin and I have had horrible abrasion problems because of that. The North Face boots have a very comfortable tongue that is a continuous piece.
Overall, I think it is an excellent boot...just not sure about the temperature issue--how much was me and how much was the boot's insulation.