Robes,
Sounds like you might be happiest with a straight-up Brown Bass.
The Essence package comes with vol-pan-Q controls, so a second Q switch would be pointless without a second tone pot to be coupled with--the switch turns a regular treble rolloff into a notch filter, which is basically a wah pedal set in one position, but with a much broader range. Each switch acts on only one town control.
Which brings you into Signature electronics, which have two sets of vol-tone-Q switch controls, or maybe vol-pan-tone/Q-tone-Q, I can't recall. Anniversary electronics, such as those used in the Brown Bass, add a four-position switch that allows quick changes to the neck or bridge pups, both together, or standby mode. You can also have a switch that selects between stereo and mono output from the 1/4 output, I believe. Many options, each offering incremental increases over the last.
If you order this last option, you could ask Alembic to prep it for Series electronics, which are mindblowing, and you could lay out the extra cash later after your bank balance recovers. You sound like a fellow tone tweaker.
Go for the gusto, already!
I fooled around for years before I laid out big money for what I really wanted, and now I don't need other basses. I might want them, but when it comes down to justifying another bass, I blow the idea off.
