Further to Matt's question, mine would be:

"Can you do an equally good job using Playable RealTracks as you can with MIDI and high quality samples"?

One of the benefits of MIDI is, you can make exact phrases and put exact notes where you want them in your song. That's just not logically possible with RTs but it may be easily doable with Playable RTs.

Does anyone have experience in using PRTs as a substitute for a part you would normally do with MIDI?
If so, then the PGMusic marketing folks could claim "you can now use Playable RealTracks as easily as you would MIDI". That may appeal to those who like the idea of being able to create specific musical phrases, but don't want to delve into MIDI, especially since BIAB already comes with included RTs.

LLOYD S