Put these on an old Epiphone Les Paul, they're excellent. The guitar did require modifications (enlarging the headstock holes), so please don't take this to mean that it's a trivial swap (it may be for your guitar, but I don't know).
They're great tuners. In fact all Schaller hardware I've tried so far has been excellent (my strap locks of choice are Schallers, tried Dunlops but didn't like them as much).