Ehm. Not sure which industry you are in, maybe banking? As a software engineer, when I do interviews and a guy walks in in a suit, that's nowadays a counterindicator. It has turned out to negatively correlate with interview performance. In my experience, dressed-up people in interviews tend to be just very inexperienced at best (somebody at their universities interview training course put "dress i a suit on some slide" an they didn't question that) or downright incompetent at worst (they are unable to understand nuanced context, draw conclusions and use them to make an improvement going forward).
