@Felix - I had a feminist client that might have rejected such a theme based on that picture.

Really, that picture has "erotica" written all over it, and while we see much worse on tv, avoiding this kind of pictures when you don't intend to sell art, porn or woman, is something which should be explained in a marketing 101 class.
How exactly will those pictures convince me that the theme is the best for my small bushiness site?

Like Otto said, smart seller should have different show cases for different audiences.