The split between Lorenzo Martone and Ryan Brown from Arc NY Talent PR appears to be amicable — they’re setting up separate agencies and taking separate clients. Brown is keeping Julie Henderson, Alessandra Ambrosio and Irina Shayk, and Martone will rep Jeisa Chiminazzo, Nicole Trunfio and Julie Ordon. We hear Martone will focus on fashion and art-related projects and will open with a dinner during Fashion Week next month.