Hot off the factory, here comes the first "major" review of the E-P2: "One more good point: when you press the button at the back of the viewfinder, you not only turn the screen off for shooting, you also turn the screen off for adjustments, chimping and photo viewing. The signal obviously completely switches to the viewfinder. Great thing for those who complained about the viewing scrren glowing in the dark. On the negative side, once you plug the viewfinder into the camera, you cannot use either the port or the hot shoe to connect anything else. So if you want the viewfinder constantly on your camera, say goodbye to the flash or the external microphone. Also on the negative side—albeit only slightly—is the fact that if you keep E-P2 in a non-dedicated bag, expect the viewfinder to occasionally slide out of the hot shoe and the port due to the movement in the bag. It would be nice if Olympus came up with a way to fasten the viewfinder to the camera. For instance, like you fasten the flashes." Link