I'm quite happy with the standard font with WoW but since I'm trying to lower my number of addons I thought I'd replace MSBT with standard if, and only if, there's a way to change the font with the combattext?
Plus, can you edit some of the messages in the default some way?
As far as I remember, the Blizzard FCT implementation is pure crap, but I do not remember why. Think it was Rophy who commented on it a long time ago. For all I know, it might be fixed/optimized in later patches.
But to answer the original poster; yes, it is possible.