I'm currently using an ancient JLCooper MSB+ to perform physical switching from one MIDI port to another.
The Roland 8850 sound module has two MIDI inputs. Each input addresses a different set of instruments.
Yes, I could be doing program changes to bring up particular instruments but I find it convenient to have a familiar preset block of instruments for each MIDI port.
I'm wondering if the RK006 could respond to a CC or PC message and change the path of a MIDI In to a different MIDI Out?