So I take it that it's not possible then. The whole idea was to avoid having 2 separate MIDI tracks of the same instrument.
I'm fine with separating each drum as separate MIDI tracks (kick, snare, toms, cymbals etc all on separate MIDI tracks), in fact it's what I do anyway (on larger projects).
But if I want to layer the kick using both SSD and Kontakt (for example), or layer snares from 3 different VSTis, I'd have to create many copies of the same thing.
If at a later time I need to edit the kick pattern, I'd have to delete all of the extra copies, and leave behind only 1 copy, do the edits, the re-copy it to the other layers. This has the disadvantage of me not being able to hear the final composite layered sound when I click on the notes in the PRV because I am only able to work on 1 kick while editing.
I am aware of "copy as linked clips" but again I feel this is kind of unnecessary (and might be prone to user errors as far as clip management goes, ALSO this still exhibits the problem where I cannot hear the final layered sound while doing this, clicking on the note in the PRV will only play the sound of the currently selected MIDI track), where as a "MIDI Send" of sorts would make much more sense.
Thanks anyway.