This is the same Model converted from subD into a Polygon Object and with verteces selected!
As you can see there are no longer any Edges!!!
Why is that so.
At first i thought i did anything wrong with the model but i have the same problem with every other subdivision Object.
Even if i create a Polygon cube and convert it in a subD I don't get a Polygon Cage.
I Even tried to reinstall Maya.
But that didn't work as well.