Knowing what I know now, I would strategically choose whether to bring a binder or not based on the program I was interviewing with.
The more intense the program, the more likely that bringing a binder and being considered "a little anal" and overly organized might actually be considered a good thing.
For programs that are very laid back, it could potentially hurt you as it would give the interviewers something negative to poke fun at or focus on after your interview.
Interviews are a game of poker; your atittude, answer to questions, and demeanor should based on your "read" of the program and you should try to mirror the residents who are already there. E.g. some programs would LOVE if you were able to quote landmark journal articles by author name, journal and date. If you did that for other programs during your interview, they would cross you off their list before they excused you.