I've seen pictures of BUDs that have an actuator in the "normal" location, and one that adjust the elevation (instead of the long threaded rod that normally is set and untouched). I'm not sure what they used in order to position it. Obviously you could use a 2nd 'manual' actuator controller for the elevation, but I don't know of a motor that is commercially available to control both actuators simultaneously. The market for such a design is probably pretty limited.
Edit:
I'm finding limited information on the following two receivers which had dual actuator control:
Eurostar LT8700 (not Echostar)
Uniden SQ550LT
Apparently this is valuable for very large dishes which are more sensitive to a satellite's minute deviations from the clarke belt.