I wear cycling shorts but running gear for most everything else on my commute. Running shirts, socks, etc. Running tights if the weather calls for it. They work just fine for my commute. I wear a cycling jacket to cover it all up.

On weekend or long jaunts, I'll wear cycling geek wear, but I'm not a fashion kind of guy. I couldn't care less about matching or team colors.

On MTB rides, I'll mix it all up.