In reply to An Triubhas: Used them in the Alps and then in the UK on my ML assessment this year. I'm a complete convert and feel a bit lost without them. I've never liked poles before, but once I got used to them, found it easier on awkward terrain and found they really help with balance specifically on steep or awkward ground. They also make everything feel noticeably easier, especially steep ascents and descents.
These poles are light, but seem to be lasting well so far. The flick lock is a brilliant system, much better than twisting and the handles are comfy. I also like how the continue some padding down the pole below the handle, this makes it easier to adjust the length on steep ground, without needing to adjust the Flicklock.
They can get in the way a bit when trying to navigate, but that's not specific to these poles, although you get used to it eventually.