On version 4.42c
I can't view my own character's description. Clicking on the button creates an error message the hidden prompt.
There are still quests that request 'royal' slaves at the guild.
It's also not uncommon for the slave windows to glitch, so they will show the same description box even if you click a different slave's name. It's most obvious with the canon slaves because they have avatars, but it happens with others randomly too.
The sister option doesn't change her name to yours.
Those are the only ones I've noticed. I did notice the same things are Torinir as well, but I thought it was just a random glitch rather than a predictable one.