The close up pic really shows some mods, even the inner web of the rotor is covered! Some are similar and some have very slight differences.
Got it right there bro , they are shrouded to help maintain optimum operating temperature . Too cold and they don't work , that is why you do not see them on streetbikes ...As opposed to steel, carbon rotors don't work at all unless they are very hot. That's why you won't see them on the street. An added benefit is the improved aerodynamics.
I mean it's obviously to reduce drag, and I'm sure some people with way more degrees than me figured out how to make it work, but I don't see how they can dissapate heat very well...