I red about the whip-dagger that it's almost the same as the normal whip, just with lethal damage.
It provokes AoOs when wielded (ok, hmmm) and it doesn't threaten. That's crap! I have to threaten to intimidate someone and to make AoOs by myself! So... any chance to handle this misery in my favor?
A solution would be taking levels in the lasher prc from sword & fist, but that helps me out in the future, not now