initially they were created to work like a waterski in powder, shane McShlonkey originially experimented with skiing AK faces on actual water skis mounted with ski bindings.
Most, in addition to reverse camber are reverse sidecut, meaninig that instead of an hourglass shape, you get a fat person shape. This allows for the waterski like feel.
The Armada ARG is probobly the most progressive sofar in that they have reverse sidecut, but then the middle section that is wider has a normal sidecut so that you can turn on groomers.
http://armadaskis.com/product/skis/ARG.php
Read that
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