I’ve been tossing around building or having built a guitar/bass double neck for years. Bass on the bottom with either one or two Hobbit pickups. Guitar on top. I have both vintage & one Jim DeCola Les Paul Recording pickup that could be used for the guitar, or two NOS Maurader bridge pickups that I made pickup surrounds similar to the low impedance pickups. I was thinking os using a Boss LS-2 to switch from bass amp to guitar amp. An interesting project that I may never get to………