Medicus

Has anyone ever tried one of these swing trainers? Just like a normal club but hinged so that it collapses if you swing off plane.

I had a go with one on the range a couple of months ago, and hit it without it collapsing (surely beginner's luck if you've ever seen my swing plane!). Now with my birthday coming up I'm quite keen to get one since I'm trying to get a more consistent backswing.

Any feedback welcome!