One of Houston's fastest-growing law firms has poached two former co-chairs of a competitor's insurance group. Pittsburgh-based Reed Smith LLP, which has been vocal in its aggressive growth plans for the Houston market, named Jim Cooper and Stephen Moll partners at the firm's insurance recovery group in Houston. Prior to joining Reed Smith, Moll and Cooper chaired the insurance coverage group of Dallas-based Gardere Wynne Sewell LLP's Houston office for 15 years. Cooper will also be a member of…