About 5 weeks late, but its about time. I loved Grier coming out, and felt he was a better prospect than Daniel Jones or Drew Lock. Nothing about anything they've done has changed that opinion. The Andy Dalton comparison seems apt, though I've always believed Dalton would have been a much better player on a different franchise(and will likely find out next year) but Grier has a bigger arm than Dalton in my opinion, and likely more mobility. If he is on the Dalton-Romo spectrum, I think Panther fans will be pretty happy.
If Grier shows well, I wonder if they may go into next season with him as a starter, or if they just go back to Cam. Personally, if they can get something good for Newton, I'd be all about dealing him, as I worry that he's in that Daunte Culpepper stage, where he can't win with his athleticism anymore, and doesn't have the passing ability to fall back on.