It won't matter if they don't trust him. You guys think DimDel will open up the playbook for the backup?
There is part of me that thinks this could actually be helpful. Just signal the play in and run it instead of changes at the LOS. Let the players just make plays, its clear that when this system doesn't have a QB that can completely handle it we end up with paralysis by analysis. Its always been a major weakness of Snyder coached teams.
I was talking with a friend the other night, and I basically said that if you have a QB in this offense that can run, but he doesn't have the coaches' trust to open up the playbook, but you have a QB who the coaches theoretically trust but don't want to run, it all kind of washes out.
Sure, they may feel more comfortable with Ertz back there since he's been here so long, but if they aren't willing to run him, our offense is going to continue to sputter. We may be better off with a condensed playbook and a guy that can use his legs to make plays under center.
Based on last Saturday, I'm not convinced there is anything more than a marginal difference in throwing ability between the two.