I have two M.I.P.'s and reported them both. I tried to get them expunged before I submitted my application (they have been expunged now), but I opted to just go ahead and submit early rather than late. I have been interviewed at 7 of the eight Texas schools I applied to, so I don't think it's that big of a deal. If it was, I doubt they would have invited me to interview. I was asked about it by interviewers at only one school: the med student asked if I learned my lesson and the M.D. laughed and told me about stupid things his daughter had done and that he understood. At another school, a lady from the admissions office told me that it was "small fries." Basically, i think it is just important to be honest, and if they ask let them know that you realize you have made mistakes and that you are past all of that now.