[onewhippedpuppy]

Suit. Sorry, I learned at an early age that your manner of dress can convey respect, and a suit is the ultimate sign of that. Your manner of dress won't ultimately determine the outcome, but a good first impression might put you over the top. Some may call a suit stuffy, but I disagree. You may be stuffy, but if that's the case, flip flops and a tank top aint gonna help.

By the way, I've never went to an interview and not gotten the job. Also, I work for two engineering companies, and don't own a pair of wingtips.