Part of the problem could have been that a few times they were put on the same night with the Neighborhoods who would make anybody else following them look low-fi. Having won the inaugeral Rock & Roll Rumble in Boston in 1979, I've seen plenty of "Hoods gigs and I can say with all honesty I’ve never seen them play or sound better than when they played The Sounds. One time they were opening for Til Tuesday and there were tables and chairs already set up on the dance floor for the headliner's crowd which drove the ‘Hoods lead man, David Minehan, to announce to his audience who were looking for room to dance, “I don’t give a shit, come up and dance on the stage!” And they did and it was great! There were so many people pogoing on and around the stage while the band weaved through them playing, it was a riot! They blew anybody else on the bill off the stage when they played Scotch & Sounds and that included Robin Lane and Til’ Tuesday.
I don't know if anybody remembers the pop metal band L 88 but they had a big local hit with "I Want You" or rather "I...Want You". They played a couple of shows at the club and were both tight and entertaining. They didn't take themselves too seriously and looked every bit like they enjoyed their time on stage.
Digny Fingus of "Girl with the Curious Hand" fame played on at least one occasion that I can remember. Scotch & Sounds at most times had quite a diverse mix of patrons but my impression was that Fingus and the people that followed them somewhat weirded out the locals a little bit.