I did forget to add one very important note to my post (see below):
Without Subtle Blow, you will be super injecting the mob with TP non-stop with a Kraken Club, and the mobs will use TP moves on you every 15-20 seconds. Thus, PLD for example should still sub NIN for Subtle Blow and equip a shield in your off-hand for the extra defense. It definitely makes all the difference in the world.