I'm pretty sure Grier operated almost exclusively from the shotgun in WVU air raid offense.
Whether he was considered a runner is irrelevant in my perspective with regard to their focus on his drop back.
Rivera actually started Moton at left tackle for one game a couple of seasons ago, then moved him back after the first series.
It was kind of hard to judge anything because Ron wimped out so quick.
I remember thinking that was one of the stupidest things I'd seen him do.