I finally discovered this trick. If you don't have a midi scoring app of some sort, download something like the free Finale Notepad. Then back at IRealPro, the upper right 'share' box with an up arrow has the choice 'Share as Midi'. IMPORTANT: unless you want the bass and drums scored too, reduce their volumes to zero first, ALSO decide how many repeats you want in the 'repeats' number at the bottom. You'll get as many as the number there. Click Share As Midi and the piano voicings will be sent to your chosen midi notepad. The funny thing is, the IRealPro piano plays... and prints a song differently every time so you will not get a print out of the exact timing you just heard last listen, you'll get the new next one, but it will be similar.
Anyway, I also hope some new version has the option to watch the voicings used scrolling by too.