I couldn't remember any, but to be sure I check the Jane Austen Fanfiction Index and asked in one of JA sites I lurk at, but had no luck. Apparently there aren't any E/B fics out there (which surprised me, because I remember that the first time I read S&S I though they'd end up together so I can definitely see the potential of the pairing).

On the bright side some people have expressed a linking for the pairing and a desire to write it, so perhaps we'll see a couple of fics in the future (which shall be dully recced here at epic_recs if they're good).