Can't believe there isn't a topic about this one yet... I think we've all seen the kickstarter for the PickPocket. There's been many variations on danglers with bottle opening abilities such as the bottlehook, the bottle grenade, the Munroe Dangler and its spinoffs. And ofcourse there is the Tec P7 suspension clip, that doesn't support a bottle opener but is pretty good in its own right.
Anyway, I've had a P7 for a long time and it has been great. But in the rotation of my keychain tools I sometimes don't have a bottle opener anymore. So I've been looking for something similar and the pickpocket really comes the closest. Been carrying it for a few days now and it's really nice I have to say. Very light in weight, easy to mount and a bit more robust than the p7:
I took the torq version, but to be honest I doubt that its hex functionality can really be used.. And I was quite surprised by how tiny it is. It's no P7 but on the pictures it looks bigger, closer to a Munroe but it's actually just a really small tool and it doesn't add bulk to your keychain pretty much.