My sister's friends wedding had no best man, not because he couldnt choose, but because the sisters of the groomsmen were all catty and going "MY brother will be best man" haha...
and my sister, at her wedding, her husband's best man, was his ex gf, mother of his daughter...and my sister had a guy in her bridesmaids...
so I think 2 maids of honours isn't that like out there...