My experience has been that seeing one Domme exclusively lends itself to expansion of limits (both physical and emotional). There have been times in my years of play when I have seen one Domme exclusively, other times when I have been "playing the field" in search of that one Domme and other times where I have been poly. My best experiences have come when seeing one Domme exclusively. When there is that high degree of trust, a high degree of unconditional and non-judgmental interaction and the ability to read each other magic happens.