I on the other hand see it more as a stage device.
Lets say you recorded the first album mainly with Les Paul and Marshall JCM900 and then you made the cleans on the second album with Stratocaster and Vox AC30, and that one heavy song on the third album with a 7-string Jackson and Mesa Dual Rectifier, and you want to use the correct guitar and the correct amp on the correct song. And then you have an additional spare guitar in case you snap a string or something. You are using wireless system so can have them all plugged in and just with a click on the pedalboard you can switch between the guitars and amps.