Casey LissEveryone 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.
JonTatum@caseyliss I think Joy Cons from original Switch work as well, with obvious limitations of missing mouse mode for certain games.
ziplyne@jontatum @caseyliss Yes you can! You can pair them Bluetooth, you just need a way to charge them.