If your client finds out that your wife was a whore, it is likely he will gloat at you and tell them to his friends. (potentially other clients) They will lose respect for you.
On the other hand, if your wife was your client's ex, it's a big difference. There is nothing negative being an ex of someboy, since most people have had more than one relationship before they get married. If your client decides to talk trash behind you because your wife was your ex. he will be the person who loses respect from others because he is a gossiper.
Note here I am not arguing whether prostitutes should be respected. Whether, I am pointing out that this profession is infamous and not respected by most people.
Why do you think people(ie gossipers) will gloat when your wife is your client's ex?
I am not saying you are wrong but I just want to hear your reason why.
See one thing I don't understand is by discussing such topics, you are automatically "lowering" yourself. Really don't understand why ppl would want to do that unless they are still very immature?