I made an all assassins all the time server for all the assassins to just go to town on each other, but in the server browser it shows the limits as being 6 supports and 0 everything else. I've played on the server and it is limited to assassins, so it's just a matter of the server browser being wrong.
i joined a server that had a 0 assassin limit :x after exiting i noticed in the browser that support was listed as having a limit of 0