@SubwayTooter That's currently the situation on my system - both Google Play and F-Droid currently feel responsible for Subway Tooter (I don't know from where I initially installed) - somewhat confusing, and I wasn't aware there were build variants either.
I think I'd prefer different package names, though I honestly can't say if I would be motivated to reinstall from F-Droid with a settings export/import, or just stay with the Play version in that case. What would happen to people who use F-Droid exclusively?