From my understanding they use slices / short loops / chords - of performances "mapped to midi" as they put it. Almost like a big rompler. Which is not a bad thing if it sounds better than MIDI only arranger.
PGM can definitely accept this challenge, if reading from disk will be successful. But again, styles for this kind of usage would have to be adjusted significantly.
I guess we will find out soon on direct read from disk.
P.S. Mario, it can be made as a skin / view of the plugin & standalone plugin if they will go that route in the future.