The presentation mode is not exact the reader mode. The font is too big, and the white background it too light. Here is an example of Chrome's reader mode(by some plugin)
I am glad to see Evernote adds zoom-in/zoom-out features to notes, which helps me a lot for reading big chunk texts. I would suggest adding a reader mode that makes a note centrally placed, well background and decent font for reading. Lots of browsers have implemented this, I am looking forward to it in Evernote.