I've talked to a dude who owns one. It was on a forum a few years back and unfortunately I don't recall his contact information.
He seemed to love the bass and had a lot of great things to say about it. Unfortunately I can't comment on the electronics. Michael Tobias is an owner of at least one Wood Guerilla bass. That's gotta tell you something!
EDIT: It was Laza of the Serbian bands Draconic and Concecration. This is his bass: