I have never seen or known a serious professional who preferred to work outside of a full featured IDE. All the most skilled and highest paid developers I've ever known were more adamant about using the IDE when compared to the less skilled developers who preferred to do things more via command line and text editors. Just my experience. I often suspect that this meme is shared and liked by people who aren't really professionals. Perhaps I just haven't encountered them yet.

Edit: It seems I indeed haven't encountered them! Although I do stand by my original point to the extent that it seems there are disciplines where IDEs are best and disciplines where they aren't. I enjoyed reading everyone's responses and thinking about areas of software that I don't usually think about. It's given me lots to look into. Thanks everyone who responded nicely! Also, I definitely did not mean to imply that specialists working without IDEs are amateurs or anything like that! Much respect to everyone out there making software.