PGMusic used the term, "Live Drums" for their styles that included drum parts played in by live players on a MIDI drumkit.
But that was before the advent of the RealDrums, which uses a slightly different scheme for differentiating what to play and when.
That scheme can work well with the MIDI drumkits as well as the "real" ones.
And - it may just be an answer for those who have been clamoring for the ability to have separated drum tracks from RealDrums.
Use these RealDrums played on a MIDI kit, which contain all the MIDI data needed, to fire real drum samples within your recording software of choice, that kind of thing.
--Mac
Very valid points. Agree 100%