So that's the basic idea. Might as well use a master tone for both pups (yeah preamps are cool and all but I think a good old tone is needed, as they are two different beasts), but I have a cheap HH guitar and I think it's cool to be able to control individually the tone each pickup. I thought this was the best way to be able to control each coil's balance within the pickup (like a spin-a-split control on guitar, for when a HB is too much but a single coil is not enough), which OLP used to do on those MM copies, and to control the balance between bridge and neck HB using as less knobs as possible. Are there any technicall difficulties that I should know about this? Side note, if it somehow matters, this is meant for a fretless.