I'll be a teacher in the fall, and I want to invest in a nice pair of shoes to replace the Rockports that got me through being a student. My question: Does being on my feet all day on a hard tile surface while not likely wearing a suit make investing in a fine pair of dress shoes impractical? Will I be replacing my soles too frequently? Will the relative lack of comfort be magnified by standing? Will a nice pair of shoes seem out of place when I'm not likely to dress beyond slacks and a sport coat, with a fair amount of cotton khaki wearing going on? A lot of concerns, yes, but I also would like a nice pair of shoes. I guess what I'm wondering is whether anyone has personal experience with those concerns and can say, "I spent a lot of money shoes but I wear them far less than I anticipated and no longer feel like they were a necessary purchase." Thanks!