A friend of mine mentioned that his son was going to a plumbing apprenticeship comittee interview this week and wasn't sure how to dress. Is a suit and tie too formal? I argued that it's highly competitive and looks matter, but they fear that looking "too" professional will make the comittee think that you don't know what you're in for as an apprentice and will hesitate the first time they hand you a shovel or tell you to clean out a clogged sewer pipe. What do you pros think?