No, I haven't. I figured it was partially from not being used to walking that much on a concrete floor. My last job was standing at a machine, or changing out molds, working assembly etc. It didn't require walking as much. I wore my Keen boots today and while my feet were still sore it wasn't nearly as bad. On my way to work this morning my feet were sore enough it hurt to push the gas and brake pedals. I am thinking the boots are more firm and fit better so that is why I wasn't any more sore than I started with. I am going to try a low top, non waterproof version from keen and see how that goes. My boots are waterproof so my feet were sweating like crazy while at work. I did a lot of loading today, company came and wanted 100 bales of hay, so the waterproof boots didn't work to great in a hot 53' trailer with the heat. I figure if I go a low top, breathable hiking shoe I will be fine.