Ability to play the ball in the air is far and away the trait you choose to covet for any DB in the modern NFL. Tackling is not something that would be a major red flag, and I don't see anything on the film that suggests he couldn't learn how to become a better tackler. He's from the Pac 10 for crying out loud...what do you expect? They aren't even aware that defense exists...they think the 11 guys out there when the other team has the ball is the special teams.