who cares, just don't play the same class
EDIT: Besides, why does the full BAB matter to you? Swordsages get more versatile maneuvers, as I've heard, and you seem to be interested in that if your rejection of Duskblade is any indication.
--
"As the size of an explosion increases, the number of social situations it is incapable of solving approaches zero." -Vaarsuvius, Order of the Stick