This plane is aimed at making primarily a cyma recta profile. That is the ends of the "S" of the profile are horizontal while a cyma reversa has the ends of the "S" being vertical. Just think reVersa for vertical. This plane can make the cyma reversa profile if you stand the board vertically while working the edge. You just have to stop it at the right depth on your own rather than using the depth stop.
Here is a video of it in action. Enjoy!