I agree. I brought a padfolio, my CV, resumes, a copy of my transcript, personal statement and secondary questions. Most importantly I had some questions written down ahead of time to ask the interviewer. One question that I got was about a poor grade I received in gen chem. I think that my interviewer was impressed when I pulled out a copy of my transcript with poor grades highlighted and REASONS, NOT EXCUSES for why they were poor. He asked to see it, read over it and said; well that covers all of the questions that I had for you. I also included a list of things that I wanted to be sure that the interviewer knew before I left, and the next thing the interviewer said was; is there anything else that you want me to know about you. I am sometimes a bit anxious and my brain goes blank in interview situations, so having the list to refer to was great. It didn't seem to distract the interviewer that I looked at my notes before answering that question, and in fact I think that he seemed impressed that I was prepared. It is a matter of personal preference. If you never forget things in interviews then don't worry about it, but if you get nervous give yourself the option to look in your portfolio.
It's up to you.