Originally Posted by
Angelus_dead
Yes, you get a major benefit.
At level 6 take Adept of Water and Unbalancing Strike, then at level 7 Halfling Cunning II and Halfling Guile II. When you hit a monster with Unbalancing Strike, it must pass a reflex save or become vulnerable to sneak attacks for up to 60 seconds. That's like you get +4 damage and +4 to hit for the rest of the fight, at a cost of only 5 Ki.
I suspect that Halfling TWF kama monks will turn out to be the highest DPS monk build, due to Halfling Guile.