Fringe
Thanks for digging that up, but aaw, that's a bit of a bummer; I guess that means it's easier/better (at least from an optimization standpoint) to specialize in the weapon you'll be using 9 times out of 10 as opposed to the Martial Art style.
For my own Adept, that would be Swords instead of Kenjutsu, as every attack with the sword would get +2, whereas only the Kenjutsu techniques would receive the specialization benefit from a Kenjutsu specialization.
So yes, very situational.