With RealTracks you have so much different playing but Drums are limited to Count-In, Normal A, Normal B, Fill A, Fill B, PostFill A, PostFill B, Ending A, Ending B.
If you look at the txt file in the Drum's folder you can see there are no cut loose drum solos.
If they fix it so you can edit the drum track non destructively like you can with RealTracks that would help a lot to build up the track how you like as you could copy sections from another drum track and paste it in without the track turning into an attached 32bit wav file.

With the Playable RealDrums now you can put anything in you like
RealDrum Solos, Rolls