First of all, I love d claws, but they seem useless :(. Dragon dagger seems way more viable for slayer at it's current stage.
As of now dragon claw spec feels pretty underwhelming when I can hit 59 with crapier and then rarely spec a 60 with dragon claws
Currently my max with d claws is an 80, but I've only came close to that once.
This was with 102 str bonus Slayer helm on task... With pretty solid attack bonuses.
TLDR: BUFF DCLAW SPEC ACCURACY