We have had one on our Metalian for 2 years. I'ts been great, we travel with the flat foot installed and the wheel stored in the car. Height adjustment is easy although if the draw bar weight is up there a small electric drill will struggle to wind it without a full battery, no problem though the winder works perfectly.
We installed it originally to beef up the jockey wheel to handle the forces of dragging the trailer out of a sticky situation if we got stuck and had to unhitch, while we have never had to do this in anger I have no doubt that it is up to the task.