Of course, works on every arm64 Debian the same way, eg. Pine64.Oh, if someone is still interested, I got plex working on the nanopi neo 2 1-bay nas omv installation
And I messaged FriendlyELEC to stress for an armhf based omv image. I hope for the best.
edit: I got the very short response just saying "not yet" which implies that they are working on that at least.