The NP-30 doesn't have aftertouch either...a $4000+ arranger should have aftertouch. Having been spoiled by the aftertouch on my present arranger, I would really miss it.
The NP-30, however, has dedicated MIDI in/out and has been used by quite a few arranger owners as an inexpensive second (lower) keyboard to give the player more of a double manual organ type experience.
It appears to work very well in that application, plus, even on it's own, I think it does have a great piano sound (same as P95), has layering capabilities (piano & strings) and is super, super portable.
I'm pretty sure Captain Russ has one and plays it occasionally (on a plane, I think).
Ian
_________________________
Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.