Good thinking SoCal2warm... because that is exactly what I did. My tree is Doyenne du Comice on Quince A rootstock. I remember reading about this good compatibility and desirable dwarfing result. The thing is, with limited space, I wanted more cultivars and so the tree is espalier and every level is a different cultivar. Beaurre Superfine, Red Williams and Josephene were grafted on levels above the Comice.
I think I am going to try Hosui nashi as the next level and let everyone know how it goes. My tree is quite slow-growing but that is a side-effect of maintaining a semi-dwarf.