Hehe. I built up a utility cruiser which I often ride in "normal people" clothes. I'll ride to the grocery store in cargo shorts, untucked shirt flapping in the breeze, and Chaco sandals (not SPD). Maybe gloves and helmet, sometimes not.
It's weird at first, but I got used to it quickly. I have the option for SPD on these pedals, and I rode that bike to work today with all my locker re-supply gear in the gigantic Wald basket up front. I was probably the weirdest mish-mash of gear on the MUP: MTB shoes, baggy plaid shorts, lime green commuter jersey, on an upright grocery cruiser.