I've done the mis-match shoe thing, the lean back and tip the chair over. Last yr one of my co-workers and I were counting vehicles at a dealership and we both (about 15 min) apart slipped on ice on fell down between the trucks. I lost my PDA and had to crawl underneath one to rescue it!! Also working outside counting vehicles in the winter I've had VERY BAD hair days, face cold, clothes wet from snow/ice/rain.