Haha. I struggled with it and it fell short of expectations.
My main gripe is you can only shoot blind with it because there is no way to view the gopro LCD back due to the cage design and the Gopro wifi lag is a joke when I tried to use my smartphone. That aside, the unit I bought is erratic. Sometimes it will tilt a little left or a little rignt on start-up. Rarely will it be perfectly horizontally. The accelerometer calibration must have been screwed up at the factory.
Tilt is controllable via 2 up-down buttons but the speed is very fast and cannot be varied so I oouldn't go slow on my fake jib shots.
I would definitely wait it out until someone puts a joystick or rocker for pan-tilt control and a design a mount that accommodates the gopro LCD back.