Luthier Gene Liberty of Sheridan Illinois designed and built this exact concept years ago. I'm not saying Mercurio ripped it off, I don't know that they ever came in contact with eachother-ever. But at the very least he was the second person to come up with the idea. Tons of people have tried to make a quick change guitar, but doing it on a pre-mounted harness from the back is really the only way IMO. That fancy circuitry scares me. It says it automatically adjusts level for lower output pickups, etc. It means there's some active circuitry between the pickup and the amp. I for one would prefer to have the output change from the switch, and a transparent passive circuit.