Is there any value in taking two basses to the next rehearsal and asking him to pick one up and show you exactly what he doesn't want you to do as well as exactly what he wants you to do?
its actually not. besides i have to get on the train at rush hour both in the morning and evening with my bass and amp on the days of rehearsal. taking a second would next to impossible. i let him hold the bass and show me what he wants me to do, but he shows me like i just started playing bass yesterday on my Fisher Price "My First Bass", and i stay humble because it feels very degrading. I'll just take me out of the picture, play to the specifications, and be prepared not to enjoy myself. no big deal.