You can play it on the Deck if you just use one of the trackpad as mouse, I do it all the time :D

I think so too, mainly based on the title and that the performance stats look like it does on my Steam Deck. Thanks for the reply!

Noob question incoming; which one is which?

I have a friend in Køben that I ordered it through, and went to pick it up there :)

No worries, I am also norwegian and I have a Deckert. There is absolutely no restrictions on using the Deck with your account in Norway. Only hassle is the actual acquiring of the machine.