I have a couple questions abot them. I have seen a couple of signature guitar with them and I like the look, for one. But also i was wondering if they only can be put on hardtails, becuase it doesnt look like you can put the whammy bar in with that on. Also i want to get one becuase that wear i rest my hand. Also where can I get one? Well if you think they are worth it tell me, thanks.