What kind of tone it would have is very difficult to estimate. Heck, if you read various wood threads in the general forum, you will see that there is not much consensus even on very well known woods, so there is little hope of knowing much more without actually hearing one. My wild guess is that the tonal variations would be very broad, as the Modulus of Elasticity (or more simply, stiffness) varies a great deal across bamboo species, so it would all come down to material selection, and construction methods, in other words, everything that goes into making a guitar.
