Of course, works on every arm64 Debian the same way, eg. Pine64.
Good to know now. Had to google around a bit to figure that out. Just though I'd put the neo 2 and armhf with plex in a post so the next person will find it quicker in the future.
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.