You can submit runs from any platform pretty much. The only thing banned so far is "alternate fast" in game speed
@barnowl are you sure? i remember asking Kosmic to do some tests and from what i remember the slowest speed matched the slowest arcade speed and the fastest switch speed matched the fastest arcade speed (excluding the alternate fast speed on that home edition rom hack thing)
Good because i don't have a arcade or NES and emulator i won't do runs on. Now i only need a capture card for my switch.
Usually ports by the game developer to other consoles don't usually count as Emu in other games on Speedrun, so if you're looking to go emu-free I would think you'd be fine with the Switch version.
@crasyfingers I read it somewhere, but do not recall where. If tests have been done, then I think by all means it should be added.
