Okay, what about ten strings?

I acquired a Chinese-made Puerto Rican cuatro a while ago and I'm not quite sure yet what I can do with it. I play the ud a bit (and some related Middle Eastern fretless things tuned in fourths) so an instrument with the same sort of sensible tuning seemed like a good idea (low to high, it goes bB eE aA dd gg, none of those stoopid thirds like you get on guitars). It produces a massively solid sound for its size, but I still find the frets a bit of a nuisance.

I believe these have been used in country music, anybody know where? I can see where the sound fits in for a typical country/bluegrass lineup - in effect it's like a tenor mandolin.

Anybody use ud-style all-fourths tuning on a fretted 12-string?