Yeah, I've got the Danctnix version of Arch running on a PinePhone original with the keyboard case. I've found the original PP is too slow for any serious use and haven't even attempted to use it as a phone. I got it with the idea of it being like some kind of cyberdeck when used with the keyboard, but the screen is too small for it to be of much use like that and it's also quite chunky with the keyboard case fitted. The keyboard also isn't very good, even after I took a dremel tool to the top line of keycaps to make them work properly.
I might well try the new UBPorts version on it as I've got an older UBPorts running on a JingPad. Basically, the original PP is very much a toy device unless you've got some very specific need for one.
https://github.com/dreemurrs-embedded/Pine64-Arch/releases