I've done stage volume gigs with an SVT before. Rules. We keep volumes onstage fairly reasonable these days and almost always have PA for instruments (but not always), I've done gigs where I thought I wasn't that loud and they ended up pulling me out of the PA anyway. Sounded fine to me when I got out in the crowd. Some soundmen hate it when you play too loud to put you in the PA, and I've had that happen even when the stage volumes are reasonable. But if it sounds good in the house and isn't blowing the rest of the band out, who cares?
Ampeg Portaflex Club #1