Ive fitted one of those as well. I’ve heard they don’t like being ‘on’ for too long- they heat up and then lose pressure... But for a temporary lock on the wheels apparently they’re fine.
The plan with mine is to bang it on, hop out the car and connect a couple bungee cords from the rear wheel spokes to the steering wheel, then release the pressure. Et voila- parked….. And for the vice-versa scenario; reach in, press the footbrake by hand, pop on the lock, remove the bungees, climb in, release the lock and then wahey were off….