QB by committee?

The thing that makes the read option work so well is when you have a QB who is mobile enough to run it, and can make a throw like a pocket passer.

If you had two types of QB's and switched, aren't you giving the play type away?

Thats the catch.

Now, one possibility you have is if you have young guy who can run and throw, like Kaep was. He would come in during some packages and run read option, but sometimes he'd sling it and catch defenses off guard.

But then you get to the point of asking, why not let this guy start?