Paul W.wrote a review of Petzl Grigri 2 Belay Device on March 22, 2015
Familiarity: I've used it once or twice and have initial impressions
I'm kinda embarrassed to say that after rock climbing for 4 years this is the first time I've tried one. Seen people use them a time or two. Didn't think it was necessary (and probably still isn't) but after ice climbing this winter at Ouray and watching others use them extensivley on top rope at the Park, I was sold. If your partner wants to hang dog all day, no problem. It makes nice catches as well. Once you get used to it you can move pretty seamlessly between paying out slack and taking in. Definitely worth a try before you buy. Not going to throw away my ATC but it is a great tool for those long days at the crag.