Very clever. I need to look at a picture of my CS-9 right now to see if it has an ambi or not......
Nope....
I only use it as a decocker, anyway, so I never pay attention to the other side of the gun. I load it, rack it, decock it, put the decocker on fire (I don't even think of it as a safety), drop the magazine and insert one more round, put it back in, and I'm good to go. It has a long, double action, "revolver's trigger", so putting it on safe just gives me something extra to think about and I don't need that if I need to shoot - especially because I'm a revolver guy first.