I use these a lot live. They don't grip quite as good as V-picks, but they taper very nicely and has a very thin edge to the point, which means that even though they are extremely rigid (2mm, rock hard) they are still easy to play strumming, funk etc with, which has always been an issue with the thicker V-picks.
The tone is a bit on the bright side though, almost piezo-like in the attack, so bear that in mind if you like softer nylon picks.