1st Gym--small class, rolled with BB coach every time I went
2nd Gym--about 30 people per class, rolled with BB head coach less than five times in a year and some, rolled with Brown coaches all the time
3rd Gym--about 30 people per class, never rolled with BB name on the door coaches, very rarely roll with people of any level who teach, but frequently roll with really good brown and black belts
I expect a coach from a gym like Gym 1 to roll, and do not imagine coaches from a gym like 3 to ever roll. It'd be nice, but it's unrealistic.