Well there are several ladies here to offer threesums on a regular basis. If you are trying to get together with two providers who don't usually play together IMO it would be best to contract one first to see if she is receptive. I have not had any threesum with any of the eccie ladies but in my younger days played often in MFF and even some MMF. They take time to arrange. I think the most important thing with two providers from ECCIE is that they feel comfortable together. I'm sure some of the gals will chime in..