I try to wear galoshes over my shoes, its more of a 95% likelihood rather than superstition that I am going to spill ample amount of water on one or both feet at some point in the brew day. It looks funny though if I have to make a trip to the store wearing shorts, galoshes, and a ratty T-shirt.
I also tend to change into a clean white shirt if I have one before I get to the parts where clean equipment is important, it just makes me feel better that I won't be brushing an auto-siphon across a taco stain from earlier or something, and white lets me see dirt/hair.
Yes I thought of this thread out of the blue while I was putting on my galoshes, getting ready to make a watery mess like last night when I got my shoes wet.