Executives of three Winston-Salem-based credit unions share insights on the Triad’s growing economy, changing technologies and the evolving roles and opportunities for their institutions. Mark Gendle, Triad Business Journal’s market president and publisher, talked to Dion Williams, president and CEO of Piedmont Advantage Credit Union, Tim Moore, general counsel and chief risk officer of Allegacy Federal Credit Union, and Chris Murray, chief member experience officer of Truliant Federal Credit…