Everyone probably knew this but me, but you can absolutely pair a Switch 1 Pro Controller with a Switch 2.

You naturally lose out on the chat button and headphone jack, but in terms of gameplay, everything works fine.

@caseyliss can you wake up your Switch 2 using it though? I can’t using mine, which is annoying. The back buttons would’ve been useful too - I love using them on the controllers like the Xbox Elite 2
@spitfire @caseyliss That’s a limitation of it. You can’t wake the console, so not just you.
@spitfire @caseyliss It won’t power the Switch 2 on.