[sjspry]

Our team was actually going to try something like this if we had time, but more of an arm-mounted thingamabob. We were going to take apart a joystick (we had some extra ones) so we didn't have to mess with getting the data to the robot.

Like others said, there should be nothing wrong with this. The only restriction I saw that dealt with robot-control is that the driver station is the only valid means of interacting with the robot.