In the meantime, I use jujutsu on 2 of my current projects full time. I do everything, including push/fetch via jj. (with a help of majutsu.el).
The third project have a lot of untracked and ustaged changes, so I'm a bit hesitant to switch it to jj right now. (technically nothing stops me from doing so, but I want to use migration as an opportunity to cleanup and commit all "ongoing" changes).
Anyway, jujutsu is hucking awesome, I enjoy every second using it.