To add to this, here's some sort of a very small review. I REALLY like this bass. The neck, which has the asymmetrical wide option, is super comfortable to play, in fact, it's quite similar in shape and feel to my F Bass. And honestly, the quality of the build is very, very close to the F Bass. ...at... ahem... less than half the cost.
When I was buying the F Bass I was talking to Marcel Furlanetto and he was saying that he had no idea how Carvin could sell their basses at the cost that they do.
Anyway, my only real complaints are the gloss finish on the neck, which I still plan to reduce when I do the other work to the bass, and the chrome hardware. At this time I'm going to continue to stick with the stock electronics until I have a bit more cash to throw around, at which time I still intend to try some other preamp and pickup options. I'm also toying with the idea of figuring out some way to use the piezo bridge pickup as a sender for a Roland GR-55 guitar synth but I may use a different bass for that idea. I'm reluctant to make any major changes to the wood on this bass for an experiment because it IS so nice.
However, tonally, the piezo does very little for me sound wise and doesn't seem to possess anything that is different enough to go into "I have to have this" mode. I can get a lot of different tones out of the bass with just the magnetic pickups, hand placement, and EQ. I would also add that I find the bass to be very ergonomically designed, it balances well and, while heavy for some at around 10 pounds, I don't find the weight too excessive. Having a super nice quality Gruv Gear padded strap probably helps.
I like this bass so much that I'm toying with the idea of doing a "reverse of this bass's wood" build. So an Icon 5W with a Claro walnut top and a flame maple body (see F Bass pic), a flame maple 5 piece neck with walnut stringers, probably an ebony fingerboard.