U64: Feature request: Swap SID Chips

[TomCat666]

If you have 2 different SID chips installed in the sockets and you want to "swap" them you need to go to the menu, F2, Audio Mixer, change one SID to OFF and other SID to 0 db. Would it be possible to have a similar shortcut to joystick swap that would just swap the Volumes of SID Socket 1 and 2 ? That would in effect swap the audible SID chip.