Whoa whoa whoa...tap the brakes a tad.  Sloter has had zero time with the #1's.  I'd say put Sloter in the back up role, let him practice with the #1's, and come the break assess where the team is with Siemian.  I'd even say hire some good, retired QB vet to come in and coach both of those guys up.  Siemian still has room to improve, and Sloter looks like he could be something special, but what I see is his ceiling is pretty far up there, so develop him!

Lynch?  Who's Lynch?   ;-)  (I was hoping he'd do good, but it is what it is.)