@s710 There is a porting guide on their Discord which was last updated in October/November. The stability report was in March which states most things working. Only things that don't work are fingerprint reader, sensors and lxc.
I haven't given this a try yet because I'm still using my OP7 pro as my main device and have stuff on it for work (i.e. windows authenticator and crap like that) so don't want to try just yet. I'm considering getting a Motorola Frontier when it comes out and then use that for work and travel and then try to install Ubports to my OP7. I am also wondering as an alternative what the Volla Phone 22 will be like as maybe that could be a good Ubports alternative and then I can extend my OP7 through custom Android ROMs.