They played it for sure at their first show in 1990, not sure about that vancouver 1991 show listed here, that one does not circulate so impossible to say.. to answer your question: who knows? I knew Stone for some reason hated Brother but then they played it again a few times, though in a reworked version.. I was hoping the rerelease of ten would have given the band a motivation to play (Just a) Girl too, but that didn't happen unfortunately.. one of the more obscure and fascinating hard rock song they did, in my opinion.. maybe they simply don't want to bother learning to play the song again?
oh, and what about Strangest Tribe? 0 times? and you played sweet lew live instead? you pussies