Standing for that long absolutely wrecks your feet if the shoes aren't built right, and I've been there! I switched to Saucony's stability line after my old trainers left me hobbling by the end of shift, and the difference was night and day - the arch support actually stays consistent through a full day instead of collapsing by hour five. They look clean enough for customer-facing work too, not like chunky orthopedic gear. The key is getting something with a firm midsole and a decent heel cup, not just cushioning that flattens out; I'd lean toward Saucony or New Balance's motion control models over pure running shoes, since those are engineered for all-day wear rather than short bursts of activity. Your feet will thank you after a few weeks of wearing proper support!