I am not sure what some people are seeing. Seems like Grier has played relatively well, especially given he is a redshirt freshman. He has made some mistakes, but very few catastrophic ones. Yes, he threw a pic last week, but it was a good play, and the throw was to the right person, he just underthrew it a bit and lacked some touch. In time he will make those throws.
As to the running, yes, he is probably tucking and running too quickly, but given the spotty offensive line, and our fairly mediocre running production, him making the decision to do that isn't all bad. It keeps the defense honest.
I REALLY like how he makes his decisions quickly, and gets rid of it quickly, or runs with it quickly. That minimizes the potential for catastrophic error.
We saw Treon all last year, and a little bit this year. He did OK. But at this point I'd rather stick with a kid has more upside and is doing pretty good considering his background.