DocShock wrote:
Although this is a Knife Master build, consider that a catfolk with claw blades gets the d8 sneak attack dice as well. This can open up a number of options for a rogue who doesn't want to have to invest his archetype choice in knife master.
So I'm assuming you have the cat's claws racial ability, which causes you to lose a +2 to Perception, Stealth, and Survival checks (2 of those being core to rogues). Then you would have to take the Catfolk Exemplar feat and the Improved Natural Attacks to bring up a Catfolk to 1d8 with claws. So losing nice skill modifiers and two feats to create the same 1d8.