The Seattle Seahawks stole the Pistol offense from Kyle Shanahan and the Washington Redskins.
The San Francisco 49ers followed suit.
There should be reprecussions for stealing without having been granted permission.
So there's this college football team, Riggo, that plays their games about 275 miles south of Century Link field. You may have seen their funny looking uniforms. If Pete and Darrell Bevell wanted to copy anyone, they wouldn't go slumming by copying Kyle Shanahan. They'd copy the master, Chip Kelly.
Until Vick gets hurt, have fun defending the most complex zone read system in football.