Vaportrail limb driver pro v rest

Anybody on here ever hunt with one, seen one, set one up? Pros and cons of this versus a qad drop away?

I've never fooled with one. But I don't like the looks of them due to having the long cord running from the limb to the rest.

Mikie, Blane had one for a few years. It was a great little setup. The way it's confgured, theres really no way it could fail.