ah - well, it was a rhetorical question...
the difference between midi A and B conversion cables is in which pin on the midi out that the tip and ring of the stereo jack is wired to... buy the right cable for the module (either A or B) and being able to switch is completely redundant!
if you have pile of these cables and mix up A & B then I can see the advantage of the switched module

"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia

Utility modules are the dull polish that makes the shiny modules actually shine!!!

sound sources < sound modifiers < modulation sources < utilities