I really wanted to like JJ, it was handy for a few months when I used it. But for me in the end I reverted back to regular git.

What triggered me to go back was I never got a really clean mental model for how to keep ontop of Github PRs, bring in changes from origin/main, and ended up really badly mangling a feature branch that multiple contributors were working on when we did want to pull it in. I'll probably try it again at some point, but working in a team through Github PRs that was my main barrier to entry.