I was twice.
The first time, the band I was playing was on an upward trajectory, I was in that band for two years, playing the band owned Squier Mickey Way Mustang Bass when at some point the band leader wanted me to change that bass for a more serious model as we were getting traction. So I brought my Yamaha BB614 just to be laught at, the band leader wanted a Rickenbacker (as the previous bass player used to own...well a cheap copy really). As I said that at that time I could not afford a bass that was two month salary for me, he showed me the door.
Second time, I show up to give a try to a band, nothing too serious, weekend warrior type with a few paying gig a year. I showed up with my Yamaha BB434M and was immediatly told "you do not have a real bass?". That band was loosing gigs because they cant find a bass player and they didnt wanted me to play with them because only Gibson is good enought for them (actual quote).
So I was thinking about that these days (the tread about the guitarist requesting the bass player to change his gear comes to mind, standing your ground) and I wondered if that happened to other peoples. I have noted Bass Brand, but it can be anything really, like people wanting you to play a certain rIf that’s all