I agree with the speakers hiding your hands. It definitely would give a false image of live playing. If that's the only on-board speaker option, It would be difficult to switch from the 800 (for me).
_________________________
Live: Korg PA4X/EV Everse 8s/Senn 935/K&M stand
Studio: Korg PA4X/Yamaha DGX670/Nord 6D73/Boss BR900CD/Tascam DP24SD/MTM Iloud/Sony C80/AGK 214/ATEM Mini Pro switcher/K&M stand