I'm kinda sorta very curious about this. Seen them at GFS and got to thinking. Most of the stock tuneomatics we get on our guitars are made of zamac or some other cast and cintered metal. Brass does really good for some Floyd bridges and even some Strats benefit from it.
Solid brass has got to be better than that powder cast stuff we see all the time right? I wonder how it would affect the tone of a Les Paul? Oh well, they're cheap enough. Might be worth a shot I suppose.