I've had serious issues with Evernote's handling of copy/paste, even from things like TextMate. I'd like to compose a plain-text formatted outline or set of instructions or even source code and bring it into Evernote w/ a copy/paste and not see it totally lose the tabs (even if they're replaced by spaces) and other formatting. I've been a little encouraged by evidence on some of the comments from the Evernote team that they're looking at the copy/paste issues... I just hope it gets better interoperability. Failing that, I'd appreciate the Evernote editor be a more full-featured Text editor in general, however I guess there's compatibility issues with all the different platforms that it supports.