I know enough British slang to understand that you are considering having your partner get some sort of gential piercing, but as there many variations, I can't comment without knowing which is in the planning.
Here's a few questions back at you.... Do you think people would do that sort of thing as much as they do if it created those sorts of problems? Have you talked about this with a professional body piercer?
And how does your partner feel about this? Does he want such a piercing?