Granted, these are not boots, but for most of my serious mountain use I use 5.10 camp 4's. They are essentially an approach shoe and have some very sticky rubber. The only negative to them is they are slow to dry. I combat that with neoprene and wool socks. I might investigate the canyoneering version on the next purchase, but I've come to believe wet feet are a part of being in the mountains. My goretex boots will wet out, just slower, but once they do it's over. If they don't wet out, usually they get wet from the inside.
Truth is, traction is as much or more about technique than it is the rubber. I've hiked up steep trails carrying 50 lbs with Five fingers before. I also have become very fond of the Merrel Barefoots, in fact I ran down 3k in an 1:01 last week with a Dana Longbed on my back wearing the barefoots. Granted, I had no designs on running when I set out. I intended to load the Dana with 70 lbs of rocks in a nasty drainage to see if I could handle it in those shoes. The running came about due to an emergency I needed to tend to.
I think boots are generally over rated. A friend and I did a mostly over snow route in April of close to 30 miles. About 12 miles, was snow only, he wore mountaineering boots, and I took regular boots with crampons. At the end of the 14 hr day, both of our feet were soaked. It's life. Good socks are the best way to deal with wet feet. Technique is more important than rubber for staying upright. Grippy rubber helps, but technique rules.
