Regarding jimmy's earlier question about tuning, I was staggering around the alembic forum - looking for stuff about Zon basses, which is slightly heretical, I know - when I came across a thread about de tuned basses, mostly about hipshots, with a link to a Michael Manring vid. That one, and the one in the comment by briant above, bear out Jimmy's point I think. In addition to the flipping of the hipshot levers, there is a lot of tuning on-the-fly going on there.
R.