Yeah not really gain city, at all. Sex city though... proviron will give you a libido boost like crazy for about half the day.
And it does help to keep on muscle during pct and off cycle. It’s probably less suppressive than dhea mg for mg. In fact, some provi, some dhea, and a little AI, and you’ve got a little mini hormone factory at your disposal you can use off cycle that won’t really do much if any stress on the testes.
Basically, all proviron does is act as an estrogen receptor antagonist (turns them off) and shbg inhibitor (via binding)