Jason Owrote a review of The North Face Verto S6K Glacier GTX Boot - Men's on June 25, 2013
Familiarity: I've used it once or twice and have initial impressions
This is my first glacier boot so I don't have a lot to compare it to. However, from what I know this seems far too comfortable to be real. I spent the last weekend exploring Mt. Shasta and practicing various mountaineering techniques in them without even breaking them in first.
Decided to do the approach to base camp in them and had no problems whatsoever, I think they're even more comfortable than my hiking boots. They performed flawlessly with crampons on snowy slopes and kept my feet nice and warm in the high winds and sleet we had.