Former Lowe/N.Y. creative Kohl Norville has signed with Z Group Films -- which has offices Chicago and L.A. -- for representation as a commercials director. ... Gary Herrmann, formerly of the Martin Agency, has joined Philadelphia agency SFGT as a senior copywriter. ... Director Dominic Savage -- formerly of defunct U.K. production company Large -- has signed with London's Brave Film Company. ... Fashion and beauty shooter Rebecca Blake has partnered with Chicago-based The Story Companies to launch New York-based satellite Rebecca Blake Films, A Story Company.