What I dont understand is why this is needed. I tryed it once and, after a few minuites of studying, i tried to make a move for my opponent. I just find it lame and pointless. In a real chess game you dont ask your opponent to get up and move aside abit while you lok at his side of the board.
The great thing about it is that you don't have to use it. I have played in a chess tournament where my opponent got up between moves and looked over my shoulder. Unusual? Yes, but possible? Yes. I think it is a good way for me to see the board as my opponent sees it so I can help to make sure I am not creating a situation that is very advantageous for my opponent. I am glad to see the feature.