Great topic. I agree with the consensus here. When the chemistry is right, a double session is a great experience for all involved. I've found that when role play is involved, double sessions really rock. One of my clients loved 2 hour spy role play scenarios with two doms. I usually didn't accept scripted sessions. But, his requests were so much fun that I couldn't turn them down. Jean Bardot and I had a blast with this client whenever she was in town. Chemistry between everyone was key. Without that, it would have been as much fun as a wet blanket.