I don't think it warrants a variable on the board, especially as it seems people will be switching between both kinds of controller mid-run. Switch controllers are bad for travel skip and underwater levels because FLUDD takes half a second to start spraying or hovering, but good for manta and Sirena 6 because of easy spam-sprays.

Think about it like SM64. Runners primarily use original N64 controllers, but they switch for 3rd party Hori Pad Minis for bowser throws because of the gamecube-style control stick. If they separated by controller type, then older N64 controllers would get worn out from spinning the stick so much. All in all, controller type shouldn't dictate what sub-category you are going to submit in (for most games)