I've done 2-girls a number of times. Experience was all over the map from "I could die now, I've accomplished everything," to "wow that was awkward" to "I wasted cash." Pay for play threesome are always the diciest. As for AMP threesomes; DD in New Haven used to do a one price 4-hands (tip included). That was a number of years ago and the best part of that experience was when it was all about the girls servicing you. When it got time for you to reciprocate, it got a little off; you were either one on one with one girl and the other watched or one would gently rub your back while you were working on her partner. Never had much girl girl interaction there.