That may be so, but unless I'm mistaken, that rule is in place so as to prevent a player from having more than one Player Character (PC) at a time. The exception for Battle Masters is that they don't have to post a new character up for every Non-Player Character (NPC) because that would just be stupid.
So that exception, as I understand it, is in place to allow Battle Masters to have more than one character in a battle at a time - however, all the additional characters are NPCs.
I think most would agree that Clutchfiend (eg, Cameron Aileron) is a PC, like Soul Reaver or Fei Serumen, not an NPC (like some random Chaos Cultist schlub), and thus really ought to have an entry in the Character forum too, Battle Master or not.
(That, and I need your retconned character history for the TTBE manual.)