Bottle openers are cool, but I don't drink so many beers that I want to carry one around with me all the time. I like my knife to be a knife, and don't want it cluttered up with extra gizmos. How can I open my beer using whatever tools are normally at my disposal?
This is a variant of an old rock climber's trick where we'd use a 'biner to open our beers. The key is to give the blade some upward pressure with the thumb of the "bottle hand," while giving a little upward rotation with the "knife hand." Do it right, and you're not putting much pressure onto the pivot of the knife. The trick is all in your thumb.