You learn nothing by sitting and watching either, or at the very least you learn the same by sitting and watching 100% of the time or sitting 90% of the time and having a few plays a game.

That said, his physical traits alone make him a huge weapon in certain situations, and it seems dumb to leave a weapon on the bench on those situations when Gardner Minshew would be worse at. Like it the Colts need a critical 4th down with a half a yard to go, I'd rather him run a sneak then Minshew.