The whip is awesome against regular enemies such as affinities and applauds. Whip hold (holding the triangle button) breaks all super armor. You can jump, whip hold, and bring enemies close to you, therefore isolating opponents when they attack in groups. After I perform a whip hold, I quickly switch to the sword and proceed to combo them to death. Also whip is the best weapon to take out harmonies.
Try this with the whip equipped and killgores on the feet: Jump, whip hold, jump (off head of enemy), whip hold, jump (off enemies head), whip hold. . . . The killgores will discharge, every other time you jump off the enemies head. You can easily do an infinite and will 95% of the time end up safely out of the reach of other attacking opponents.