I think i had trouble with the git plugin on android and ended up not using it. I used Termux instead and just used a couple of homescreen shortcuts to scripts to pull and push. Theres 100% a simpler way, but that's what workes for me.
Probably. Its the same full git you would have in any other linux distro. The only time I had a conflict, I just stashed the changes because they were minor. From then, Ive just had to be vigilante about remembering which device has the latest vault. Im not awesome at git, unfortunately .