Ok, where are all these Wolverine clones in the comicbook world you speak of?
You don't only have to go to comics to defend the claws, you look in the game and at back at oriental history.
Ninjas.
Ingame, ninjas have the 3 bladed claws. There used to be a claw much like this, if I remember reading right, that was used in fights and for climbing.
Heck, look at Enter the Dragon, the evil bad guy uses either a 3 or 4 bladed claw hand to fight Bruce Lee.
Also, the claws do not animate going into and out of the hand, , the hands are thrown out and the claws appear
Plus, depending on the glove you make, you can see a big, squarish baseplate that the claws come from and are attached to, most noticeable, and much like the backside of a handgrip.
So, if anything, Ninja clans of the world ought to be suing marvel comics for ripping off a Ninja implement.