Do runs from the switch get accepted?

Yeah I'm sure that would get added if you submit a run, just say you did it on switch and they will probably add the category and change your run over it

There are some minor differences between platforms, but that's mostly regarding glitches. If you're running glitchless whatever platform you upload it as will be fine, just add something like "Platform: Switch", "This run was done on Nintendo Switch", etc. as a comment when uploading a Switch run.

I'm assuming the Switch port will behave similarly to the PC version, so for now it's probably best to upload it as a PC run until Switch is added, and then we can fix it in the future.