For a woman to wear a QOS tattoo initially speaks VOLUMES to anyone who notices it. Along with an anklet that has QOS or a little spade on it. These scream to the world that this woman not only fucks whomever she chooses, whenever she chooses, regardless of what her Husbad/Partner thinks, but that she also prefers BBC. Two women standing side by side, one has a little QOS tat on her ankle, the other does not. They may both be women who cuck their hubbies, but I know which one I would be getting hard just watching.
And I would guess that is pretty much why she would have that tattoo or anklet. She wants everyone around her that notices to know that she is available for BBC.
Now her husband/partner is completely irrelevant. No one, especially the BBC gives a ******* about the cuck. He is there to pay for drinks, pay for the room, supply condoms (if used), and for cleanup duties. The Bull could not care less it the cuck is branded (most of the time). The branding that is done is 90% to make the cuck happy. Here's where it gets interesting.... Panties and a cock cage should be all that is worn, most of the time. However a lot of cucks, when they cross that line from preparation and cleanup, to actually sucking the Bull's cock.. well, then maybe it's time for a Jack of Spades tattoo, but I feel that's only if he sucks BBC alone or with the wife.
Because your status as a cuck will mean nothing to anyone in the room, why would you advertise it in any way? Now if you are a JOS, and you happily suck BBC, well then by all means advertise it! You want everyone in the room to know that you suck cock, just like the woman with the QOS wants everyone to know.
Or, if the wife demands that you get one, you so as well! LOL