Chip Kelly would be a disaster. The defenses are just too good in the SEC. All it would take is a couple of stops to fall behind, and when you would score it would be in less than a minute. Defense would be absolutely gassed by the 4th quarter.
It works in a conference like the Pac 10. I don't think it would be successful in this league.
...and in before it worked for Auburn, they weren't snapping the ball every 8 seconds and they had one of the greatest QBs in the history of the league running the show.
There is that side of it. You have to have pretty much two complete defensive units. Tennessee Tech had the ball for about 40 minutes and the ducks only had it for 20. It was fun to watch!