I swung a Medicus 5I once. Silly thing is broken, the end kept wobbling around on every swing. It sure ain't gonna ever be part of my gear.
I guess it helps some players, but it forces you into the designer's idea of what a correct swing is, and if that doesn't suit you that's just tough luck. I couldnt even make a chipping stroke without it breaking on me.... 'course, I didn't have any instructions for it, so I might have been doing it completely wrong.
Anyway, I'm relatively happy with my swing, so I'm not going to risk screwing it up with that club. I'd sure find a way to try it before you buy it. I'd be willing to bet that more than half of the people who buy those things end up getting no value at all for their money.