I have really come to dislike EVFs for a variety of reasons. I had an X-Pro1, and used the OVF as often as I could, but soon found out that there was no way to reliably know what the camera was auto-focusing on. In order to do that, you had to switch to the EVF and when I couldn't get it to focus on what I wanted, I had to switch to manual focus which then required more manipulations of the camera's controls to get the 3x magnification required to manually focus the camera. I found that I needed to do that regularly and routinely; perhaps others don't run into that as often as I did, but it happened often enough to me that it was frustrating.
I have very acute low-light vision. An optical view finder works well for me in very dim conditions. Using the EVF, on the other hand, blinds my night vision. I can't reliably assess actual light levels and contrast levels and translate that information into exposure from the artificially-brightened levels that an EVF gives. I don't care for the contrast that they render as (the article says) they're just not close to what I see in an optical finder. And the refresh rate of the EVFs in the cameras I've used tend to give me a headache if I use them for more than a few minutes.
The trend that Olympus is taking with going all mirrorless with EVFs is why I sold all of my E-DSLR gear and returned to Leica. The E5's finder was beautiful, and there may yet be an E-7 with an optical VF, but considering the success Olympus has had with mirrorless in the Pen series and the OM-D, I decided it was time to try another system. EVF cameras are much less expensive to manufacture, I'm sure... but I won't be using one of choice, and fortunately I don't have to.