well, these were talked about a while back. the sceptics thought they'd never see the light of day, but as of this evening, there's one nestled snugly in the back of my '93 Eggle L.A. Plus!
it works. don't really know what else to say about it. installation was painless, took about half an hour, could have been quicker but didn't want to make any stupid mistakes. and.... it works! tighten one thumbscrew and the bridge is dive only, tighten the other two (just to be sure) and it's a hard tail.
i'd definately recommend it, and will be ordering more for my Gibson MIII's and their floyd roses.