Oh, i don't know about that. Many people complain about muzzle flip and high bore axis on revolvers, and while ugly, the Rhino definitely addresses that issue.
Unfortunately there's no recoil impulse reduction with revolvers, being similar to a bolt action rifle, so instead of being flipped up the force is transferred directly back into your hand on the Rhino.
I think too, shooters enjoy that SA shot every time you pull the trigger, something not available on a revolver (unless you thumb the hammer back of course).
There was some sort of automatic revolver but was super expensive.