Originally posted by philbaum
I spend about 1/2 my time online reading PentaxForums and the other half reading a Sony forum. In the last 3 years, i don't recall having read even one complaint about the usability of EVFs on Sony forums. Yet on this forum, there are these frequent concerns about EVFs and statements that perhaps in 5 years in the future, EVFs might be usable.
Some of the posters on the Sony forum are ex-Nikon users, ex-Canon users, etc. Even they don't complain about EVFs. I've spent the last 1/2 hour switching between my K3 and my Nex cameras, trying to figure what, if anything, is objectionable about EVFs. I do like the clarity of the K3 OVF, but on the other hand, my EVFs have features that my OVF can't duplicate. For the shooting i do, EVFs are better overall.
I suspect that some of the complainers about EVFs, haven't tried one recently (recently being in the last 2 years or so). If thats the case, please be honest with the rest of us and let us know if you are commenting on EVFs without having any recent hardware experience. Again, it seems really odd to me that on camera forums where EVFs are used all the time, that folks don't complain about this feature. Really really odd

Well, yes, I just tried Xt1 and Oly EM1, EM5-II just last weekend.
Did it change my opinion? Actually yes: I thought Olys were among the best but the XT1 kills them.
As for the possibility to replace an OVF? Nope. Not a proper one (DSLR/TLR).
Now, of course, compared to OVF built into most AF compacts from past decades, I'll take the EVF. I mean, a proper EVF. Of course.
As for details which can be added on an EVF, it is very useful for those who need that. Personally, overtime there's something over the image, it is a PITA. On a second screen, up or down, why not. Even microprisms in an OVF is necessary evil, blank screen maybe with rule of thirds is the only thing I can tolerate as well as little helps which eat very little on the side of the image (MX speed dial, Pentax speed/aperture from Z era etc). Anything else is a PITA. And if EVF become as good as OVF, mine will NEVER show anything over the image.