It would be fairly dead, even on a real piano. If you recorded a real (good) pianist playing the same piece using a piano with a sensor bar the result could be played back and would actually be quite nice to listen to. But to go straight from score -> midi -> audio will not give an interpretation that will be very interesting.

If you want I can record a piece that you pick on the midi player piano that I just completed so that you can see firsthand what the effect would be. Let me know.