I think the whole racket makes no sense. I think the racket should give no skill but allow intelligence to perception. Additionally they can use sense motive against the targets reflex DC for flat footed till the start of their next turn or 1 minute on a critical.
They're analyzing movements to predict where they'll be and the best spots to strike. Recalling knowledge to identify a human wouldn't do that.
It also makes it far less clunky. Reflex DC versus perception is easy and makes sense being used every round.