Yea, you should have no problem fitting in a reg D width on these if your in a EE in the Vapors. The Vapors in a EE felt a little narrower then the RBZ's in a D width. And going down a half a size is a safe bet if you can not try them on.
CCM rep came into the hockey shop i work at and i got to try these on. Skates are super comfortable with a wider toe box. Prior to these skates i have basically only been able to fit into Bauer Supreme Skates (in an EE width) and some Graf Skates (in a wide width). I was almost able to fit into these skates in a standard D width. The sizing is a little funky so I would highly suggest trying these on before ordering any. I wear a size 10.5 sneaker and in Graf (705's) I skated in an 8 wide. When i switched to bauer a few years ago (one100's) I dropped half a size to a 7.5EE. When I tried on these CCM RBZ Skates I tried on an 8 originally as that was the size I fit into when trying on the Crazy Lights. They were to big and tried on the 7.5 in a reg D width and were still to big. I ended up trying on a 7D skate and they were a little narrow for my wide foot but still had some wiggle room for my toes. I am going to end up ordering these is a 7EE but def could have gone down another 1/2 size if I wanted to. Basically I would highly suggest trying these on at a LHS before you conside ordering.