Cool smiley, el cid. Yeah, I'm not sure about how the button lock on a Paul knife works; what I'm talking about is the combination firing/lock release buttons on some autos. The Microtech Socom Elite, and the GT Autos come to mind; I know GT made manual opening knives that still used the push-botton lock release. I always thought this lock worked by a cut-out on the blade being engaged by a part of the button, making the firing button an actual physical part of the lock mechanism; is that correct? I guess what I'm wondering about is a) how this style of lock compares to others, and b) if it's any good, why isn't it being used on more blades besides automatics? Thanks for everybody's input so far.