He was a fixture on the selling floor of the men's department at Dayton's/Marshall Field's/Macy's downtown for more than 20 years. Now, Keith Dorsett runs the show at his own shop just across the skyway from Macy's. He mixes local designers with quality labels such as Scott James, Unbranded Denim, and Zanerobe. Dorsett himself: He's smooth, knowledgeable, and accommodating. Remember when you could say the same about department stores?