I wired up a little breakout box / y-cable that lets our driver select between 2- joystick drive, and 1 joystick drive with a flip of a toggle switch. Even lets them choose between the left and right joystick, in case we decided to use non-ambidextrious joysticks. (even though we didn't...)
So now its not my problem, its the problem of whoever is driving.
Easy enough to program, and it was just a bit of a pain to make the box. Nothing too bad.