Huh?
I agree with starting Guiton. Miller will be somewhat rusty, I don't care how well he's done in practice. Under Miller, we scored 40 against Buffalo (who gave up 70 to Baylor the next week). Under Guiton, we scored 35 first half points against San Diego State before going on cruise control in the second half once up 42-0, scored 52 points on the road against Cal (yeah, their defense is suspect, but we scored significantly more against them than we did Buffalo), and then 55 first half points against FAMU. In the three first halves Guiton has played, we scored 35, 31, and 55 points. Meyer likes to start fast, and you can't get much faster than that.
Guiton has been scary efficient during these three games. I'd say start Guiton and maybe slide Miller in later to see how he plays. I hope that if Meyer does choose to start Miller and Miller is rusty/inefficient, he doesn't hesitate to pull Miller and put Guiton in.