I have no problem jumping between 35" scale, 34" scale, 33" scale, 32" scale, and 30" scale basses.
yeah, i have friend that does that as well.
better men than i . . .
however, i will say, i think it depends on how and what (music) you play. about 90% of what i do is improv stuff that doesn't entail parts (or sometimes complicated written parts), so it's all about being able to nail where i want to go in the milli-moment. i think it also gets a little hairier if you play fretless as well and do a lot of switching.
my general purpose in putting it out there was for the op to question how much changing *he* wanted to do between scales and how it would fit with how *he* does stuff.
it's not an absolute by any means.
