I do this a lot with Reaper. I build the tune in BIAB including part and section markers so I get all of the drums fills and transitions from part to part. I then mute all of the instruments except for the drums and then generate the midi file. When I import into Reaper all of the midi tracks are blank except for the drum track, so I just delete the tracks. I then have a great basic starting point that I can edit and tweak. I use EZ Drummer and Steven Slate Drums as my virtual instrument.

Works like a charm.
<<TS>>