self adjusting brakes still use more fluid than a caliper---and cars dont swap ends unless there is more braking in the rear than the front--so if you had only a brake on the right front wheel the car would follow the brake on the right front------if you want to swap ends on your car you can go 60 mph down the road and slam on the rear emergency brake----if you dont move the steering wheel in correction attempt the car will turn ass backwards following the friction of the braking rear end....