Thanks for the recommendation. You're right in that it'll have to be "mislabeled" on the Ford controller.
Here's a picture of the Audiovox controller:
I forgot to mention that it
does have an OFF button, but it doesn't have a dedicated wire running to it. I wasn't entirely sure how that particular button worked, since the circuit board in the controller didn't have a circuit running to it like the other buttons did.
You're correct though in that the servo has an automatic off with the brakes. It has two automatic offs. One turns off if the brakes are pressed, and the other turns the unit off if the RPMs radically raise (such as in the case of pressing in the clutch to shift, or if the wheels lose traction).
((And yes, the Audiovox does have the dip switches. They're primarily for telling it how it's installed. Auto/manual transmission, VSS speed sensor or magnetic pickup, RWD/FWD, etc. etc.))