Why not simply use a clamp-type connector?
I couldn't agree more, but perhaps, these are made for new work, as in installing it in a new line of pipe?
Most of the crimp gear I use gives a standard crimp every time.
When Mr Plumber comes along with his slip-joint pliers and attempts to do a decent crimp with them, I can't see how an effective connection can be made, especially one that could quite conceivably carry quite a bit of current under fault conditions.
One last question, is there a proper crimp tool offered for these devices?,some of the crimps on that page that Paul linked to, look really shocking.