The Roland GP690 is the only one in a traditional grand case, from what I"ve been able to find. The Yamaha N3X is shaped like a grand, but has a sleeker, more modern look. Between the two, the Roland is more fully featured and less money, but doesn"t have the true grand action. Sound-wise from what I"ve been able to tell from demos, the Roland still has that digital fleshy tone on the low end but the advantage of modelling is it has a lot more parameters to play with. The Yamaha may be more robust and in the long run may be the better investment, plus in a setting where many pianists may be sharing the duties, it has fewer bells and whistles to mess with and the action should keep the more discerning players happy.
So if I"m the restaurateur and had the budget, I"d go with the Yamaha. At home for the fun aspects, I might like the Roland.
Awesome thanks for the info!