Yes, or non-fannish literary fiction? Because I've done that twice now -- my LJ/fannish nick here is the successor to an earlier one borrowed from a highbrow British lit-fic author, which I used pretty continuously from my early BBS days up through all my early years on the internet proper. ;)

(What can I say, I am far too easily amused by the secret-handshake aspect of having a pseud that many folks won't even realize is not my real name, unless they've read the same books...)