Thanks @npudar for mentioning standalone, I haven’t tried that in an age.
I have used up to 2 MidiGuitar blocks and 1 MidiBass in the same patch. An MG on both the Melody and Bass sides of the Stick, and an MB on the bass side to catch lower notes MG does not reach.
Similar to @tonycore explanation here Overcoming the low end range restriction of MIDI Guitar 2 with GP - #2 by wtapia
At one point I even had all the MidiGuitar and synths in a separate instance of GP to the Audio processing. (Now I actually use setlists in Setlist view this could be much easier to coordinate than before!)
This is not possible in standalone, but it is a use case I currently don’t need so I shall experiment 