Just wanted to let you know that yesterday my BG-E11 Battery Grip came in. I now understand why it is that the BG-E6 was not made forward compatible. The new button array is far superior on the BG-E11 (with a second joystick).
My only gripe is that the new battery component slides in through the side (on a tray), so that it looks similar to a 1 series. My guess is that this was done to incorporate the new molding and the additional joystick. The problem is that for those of us who use L brackets on our cameras, it will mean another $189 to Kirk.