I'm coming to the conclusion that as cool as trems are, it's just not worth the hassle of them considering how little I actually use one. I usually just do divebombs (my Whammy pedal can do that), and the very, very rare flutter. The Death Warrior's Tremol-no is in locked mode and I never put the bar in my KXK. In fact, if I'm really honest about it, as cool as the action is on a Kahler I just find the bar positioning a complete pain in the arse. I just find it getting in the way all the time.
Add to that my propensity to damage them every time I try to set one up, I think floating trems just aren't for me.
Having having had that moan, the one thing I do like about double locking bridges is fine tuners. String & tune it properly, lock it up, and you can use the fine tuners for ages before you have to unlock the nut. I recieved my KXK in July, and the first time I unlocked the nut was Monday night to change the snapped high E. Yeah, I know it's a long time to not change the strings, but I honestly haven't had much chance to play it and wear them out.
Anyway, the upshot is I'm not going to be selling either of my main axes, even though I only own floating bridge guitars at the moment. I'm still selling that 540S7, but that's because I can't justify keeping it right now. When I get my KXK set up with D'addario's to match the one's on the DW, I'll get the set screw put in to lock it into fixed bridge mode. Then, I'll be rocking two guitars set up as fixed bridges, but if I ever feel the need to mess about with a floating bridge I can.
It'll also mean I can mess about with altered tunings, as rebalancing a floating trem is a pain in the arse.
I also dont like trems.
so i wont be getting guitars with them