Hi slicksteel,
Yes you can use your fkirons click grip with any standard 8mm vice .
The Stigma Jet , Beast v2 and Prodigy are hybrid machines to accept both the standard 8mm grips and needles and also the new Stigma style grips and cartridges.
The Stigma Jet , Jet-Power and the Beast v2 will be available by the end of May , and the Prodigy V2 by the 15nth of June.
Thanks,
Artemis