I do play all of them. I give them all different roles for teaching, studio, clinics, local gigs and touring.
I have '78 Precision that I only use in the studio for an old school R&B feel and for old school Reggae.
I have basses that I use for Funk and I have basses that I use for Rock.
And remember that as a teacher I want to 'mirror' the student. So at Bassology I have 4, 5, 6, 7 strings basses. I also have fretlwss basses and tenor and piccolo basses at my school.