Is the Lens Controller (fka FocusPLUS PRO) compatible with focus-by-wire (servo) lenses?

No, Lens Controller is not compatible with focus-by-wire (servo) lenses. Lens Controller can be used with hard-stop lenses and infinity lenses.

Hard-stop lenses: Mechanical focusing with a hard stop on the ends of focus limits. The focus wheel rotates only for a certain amount.
Infinity lenses: Mechanical focusing with no hard stops on the ends of focus limits. The focus wheel rotates infinitely without adjusting the lens elements.