In reply to Diddy:
I'd second that, the Pacerpole handle ergonomics are light years ahead of anything else widely available. The standard models have a twistlock, but it doesn't seem as prone to locking up/slipping as many. There's a lever-lock model too but that's definitely not compact.
On the downside, they're none as compact when collapsed as many lightweight designs, so if it's a climbing day when i'll end up stashing poles in my pack at some point I tend to go with something else. For actually walking with, though, they're the business.
Disclaimer: I do know the owner/inventor. But she hasn't paid me to be nice.