I've really wanted to like the Counterpunch but I just can't get on with them. I also don't think they are as useful as claimed.
If you use the end of the bar when riding you'll probably hate them (it felt so nice riding with them off again).
Also they actually extend the width of your bar so for the purpose of avoiding trees and hurting fingers , in effect you are actually widening your bar. This seems a bit silly. And in a world where you see bike reviews regularly commenting on a 5mm difference between bars making a difference to fit through trees!
The 'hook'for me also caused more problems than it helped with. The bar isn't just extended outward but forward and I caught the hook on quite a few trail obstacles , once when riding and twice when carrying the bike. This seems more than a shade ironic.
If I'm riding through a section where there is potential finger damage , through tight trees for example, its just as effective and without any negatives for the rest of your ride , to move your hands in board by 5mm for that little bit.
Like I say Ive tried these for months and dont want to hate - I actually really wanted to like them,but just giving a balance of view.