Go to www.bigblockdart.com That's Bill's site and it has a very good forum section.
There HAS been comments from several people useing these, but that wasn't what was asked about @ the start of this mess, the basic anwser is NO. The next is NO it's not gonna happen anytime soon.
Cleaning this C.F. of a thread would require removing most of the posts-mine included and editing out the posturing and unveried "claims" by the maufacturers.-Yah right that's gonna happen.

There's also the Control Freak unit that looks very similar to the Alter-K, guess it's not that "inferior" to the XV design, or they would have knocked that off Time for me to get ready for the Fall Fling