I've been reading a lot about Jerry Garcia's rig lately and the OBEL in his guitars. It was set up so his guitar signal went to an output (pre volume control) to his pedalboard then back to his guitar so he could have a stronger signal going to the effects (a mutron to be specific) and total output controlled by the volume control on the guitar as well as being able to bypass the whole effects chain. Has anyone ever tried this for bass or any reasons why it would be bad?