I love this boot. I've been using a pair since January and they've been great for ice climbing and mountaineering. They are sufficiently thin enough so that you are not relegated to using only your from points when WI climbing, yet are super sturdy when from pointing. Also, they edge like a dream on rock.
I have to say that I usually don't get cold feet, so that hasn't been a problem for me. If you tend to get cold feet I would probably go with the Nepal Extreme or similar.
The Trango Extremes have really stiff shanks which makes them really tough on your feet for long hiking approaches. Also I have had a problem with the tongues rotating to the outside of the boot. I've also heard that other people have this problem, but I haven't heard of any way to prevent this.
Good luck with whatever boot you go with.