Jim Johnson referred to defensive linemen who could get after the quarterback as "fastballs," and the former Eagles coordinator liked to throw as many of them as he could.
Vinny Curry, whose singular identifiable NFL skill is that he can cause an awful lot of havoc in the backfield, would have been Johnson's kind of guy. There are some other things at which he might not be as proficient, but for a defensive coach who feels the most important job is making the opposing quarterback uncomfortable, Curry is a valuable card to hold.
From what we can tell so far, Jim Schwartz, the new defensive coordinator on head coach Doug Pederson's staff, doesn't mind having some fastballs, either.