Why not wait for the M-D version? The real pull of the M-D version for me was the ISO dial on the back and never needing the LCD screen again. However, now with the dedicated ISO dial on top, I will have what I need and be able to see all my exposure settings by look down at the camera. I can just turn off previews, and reserve the right to use it when I need it. I would love to try to shoot with the WATE without the franken-finder and use the LCD screen liveview for focusing and composing. Also having the option to format SD cards in camera will be nice, which is not available with the M-D.
So, I've successfully punt the camera purchase decision down another 1 or 2 years, and my wallet will thank me for that.