@jefito: on my desktop setup, all's fine: I find an article, clip it via Clearly, read+highlight it, then save and archive the highlighted article in EN. My problem is that there is/seems to be no similar solution for smartphones (i.e. read and highlight in a reading app, then save highlighted article to EN), and I do most of my reading on the go. A satisfying solution by EN would be either a) full integration of a reading app with EN or a reading mode in Evernote which allows highlights (will check if this has been requested; after searching the forum, I believe it has, but has not been adressed/implemented yet).
@chirmer: you're right, Presentation mode IS quite nice for reading (but doesn't allow highlighting)... But I'm onto sth with IFTTT now: a recipe which translates the highlights within an Instapaper article into bold text in the corresponding EN note. That would be good enough for me... I guess that might be possible via HTML formatting (https://ifttt.com/recipes/102985-if-i-save-an-rss-post-in-feedly-then-create-a-nicely-formatted-note-in-evernote) - maybe I can get such a recipe set up (haven't found one - I have zero skills in HTML, but I'll give it a shot... )