Up for sale is a Forster Co-Ax. Just installed the updated linkages from Forster. Inline Fabrication quick change mount. Also comes with a light kit that I have not installed. It is new in box. $425 shipped lower 48.
Not the guy you asked -- but I personally think they're worth every penny. That open access (and for me the short handle and short-throw pin) makes the loading process a whole lot faster.