Ok, I see what you mean. I've spent a lot of hours rehearsing with bands only to have them fall apart without playing very many gigs. I've also said no to bands that go on to play lots of gigs.and that's my point, ultimately I want to play live bass (without singing vocals if possible).....with Beat Street (first GTG band) we would practice once a week (like you say 3 and 4 part harmonies) and after all that effort the band no longer plays out which makes me wonder if I should have just stuck with JMB alone.....
But yeah, a situation where you can just roll in to a gig and play rock is pretty sweet!