Better stock up on Enhancement scrolls.

The commonly used max for ees is 12, due to that being the max of prots. Without prots being needed, could you have infinite ees?

The only limiting factor is the chance of destroying the item, technically an item can be enhanced 13 times or further. *No one in their right mind would risk that though, so I would assume that these indeed can be enhanced ad infinitum. *The big question is: can gloves or weapons get this attribute?

There's a 15 star EE cap on all gear now.