I just made one for my lv55 HUnewearl. She's been using Claws since lv35. My opinion may change when she tries Super Hard but right now, she's stomping on Hard mode Off-Line with Serpent Air PA, Celeb 4 element, Native 15 (from the Custom Shop), Machine 35 and Dark 40 on her Haden Bite ground to +20. I was trying for something with a bonus in Accuracy but decided to accept this setup after so many horrid Stat/PA combinations.
She used to carry a Sword but I found fast moving hostiles like Batts were moving out of the way before she could complete the 3rd swing. I tried Daggers and liked them but when I tried Claws, I knew I found her weapon. I do have a problem judging the distance to the target but once she gets close enough, her Claws are devastating.The normal attack is fast, easy to get the tempo right, and tends to get the 3rd strike in even against stuff like Batts. The hostile also tends not to retaliate while she does her chain. Unless the Batt is all alone, though, I don't bother doing regular attacks since I have something better....
Serpent Air is fanatastic vs Batt swarms. She charges her light attack, runs into a swarm, unleashes, and the swarm goes <Poof>. In the Plant, she does the same thing vs Akorse led Korse formations. After she unleashes in the general area of the Akorse, it goes <Poof> and the survivors of the swarm are barrel rolling out of control. In both cases, it doesn't really matter if I can't perfectly position her before unleashing. She flys around such a wide area, smacking everything in her path its actually hard for her NOT to kill a bunch of hostiles in the swarm.
Against something like a Rojade, I've seen her kill one with a single Serpent Air on Normal mode many times (even On-Line) with a Celeb3 Adoralph+20. On Hard mode it takes two more regular attacks to finish it off. A Celeb4 Haden Bite+20 should be even better.
It also works quite well vs Humilias since she can hit both legs multiple times each even from one side. When it kneels, she hits it all over.
I tried Bite Stamp and Slide End as PAs on other Claws. I prefer Serpent Air since I don't have to aim as precisely as I do with the other 2. Against fast moving hostiles, I tend to miss with Slide End since the target tends to move away as she slides sideways. They tend to move right into the path of her spin when she does Serpent Air.
Again, this is just my opinion based on Hard Mode experiences. We'll just have to wait for her to hit lv65 before I try Super Hard.
Edited because my Rojade story was for Normal mode not Hard.