I did! According to my league's stats, they are the second best defense (tied with Seattle)!
Plus, after their bye (and a game with Seattle) they get Miami and Buffalo if I'm not mistaken. If they keep getting turnovers, they are a great matchup D to use right now.
Arizona may be this year's version of KC defense - they allow a ton of yardage, but they get so many turnovers and keep the game close so that they are a viable for fantasy.