I'm really happy for these kids, especially #57 Jordan Miller, who came from a good private school program here in Atlanta. (Who is #57?) I don't understand the derision that is heaped on these walk on kids. They are the purest form of "scholar athlete." They are literally playing for the love of the game.
Here is an example of a walk on at a program that has waaayy more tradition than SMU:
http://en.wikipedia.org/wiki/Clay_Matthews_III