Lightweight but Stable
I have been wearing these boots mountaineering for 2 summer climbing seasons now. They are very lightweight boots, so that if you bring approach shoes (like light trail hiking shoes) these boots can be slung over your pack no problem, and do not add too much weight. They are light on your feet too, but the ankle support is still great for uneven terrain. I have been able to use them for hiking, scrambling, and full-on mountaineering. I am able to climb 4th class rock in them, as well, and feel confident on 5th class when roped up. I have worn them when I am also carrying a heavy pack and feel stable.
In snow and water, they stayed warm and dry - just be sure to wear socks that wick away sweat and moisture. They are not very insulated, so for multi-day winter hiking or outings, that is something to think about. I would wear them for shorter ice-climbing approaches no problem, so they are only compatible with crampons that sling around the back and don't have the 'clip' features.
Hope that helps!