Maybe I'm stupid, but I'm just not that worried about this. If Ewers is at 90% and dealing, we win. If he's too hurt or off his game, Sark has a built-in excuse to switch to Arch that lets Quinn save face. And I think we can beat A&M with Arch, given how different the playbook and gameplan looks with him. He's like the polar opposite of Ewers. Either way, Elko is now stuck trying to prep for two completely different QBs. And he doesn't have the horses. Their DL is great, but their LB and DB groups have serious deficiencies.
My only lingering concern is that Ewers will go out there, look bad, and Sark won't switch to Arch until we're deep in a hole. Then Arch is put in the position of trying to pull us out of it. Although I think there's a reasonable basis for that concern, I also think Sark has earned a little grace and a little confidence in how he manages the season and the QB room. I'm never going full on "trust the corches," but I'll trust Sark on this until he shows me otherwise.