I'm a teacher so I don't have a shower at school, and I'm afraid if I wear my khakis they'll get a) sweaty, and b) chain grease. I'm not opposed to bringing along my work pants, and depending on the temp wearing my work shirt/tie.

I haven't actually commuted yet - just got a bike. It's 11 miles each way. I'm thinking maybe some windpants? for while it's still cool in the mornings, then when the TN summer hits I can just wear shorts, I figure. Still up in the air.