@berry @archaeme That seems to be what many people do. I'm running two gnu social servers, Shitposter Club is running GNU Social 1.2beta (currently on beta4) and Qvitter main branch. I periodically pull Qvitter as there's always little enhancements and fixes, and if there's a regression, @hannes2peer tends to fix it very quickly (even faster when you report it.)
I am also running a testing server running GNU Social main branch and Qvitter main branch that I pull all the time. It seems very stable but I'm hesitant to totally recommend doing this. ALWAYS do a FULL backup before upgrading.