You touch on a very deep component of the Master/slave relationship. Often overlooked as people focus on the more obvious aspects of the lifestyle. While my wife and I are not 100% Black Owned, I do feel the weight lifted from me about sexually satisfying her. Before her BBC Bull I constantly worried about her sexual disappointment and how that was negatively impacting our marriage. Since she met her Bull I no longer have those worries. She is completely satisfied and our marriage is great.
When I do have the pleasure of getting away with my wife and Bull I truly get the full benefit of being Black Owned. He tells me where we are going, where we are staying and what we/they are going to do. He gives me my daily list of chores/errands and my focus is clear. I know if I do well I will be rewarded by being allowed to watch them together.
I can easily see this expanding to day to day life. Something I would greatly enjoy.