The only scenarios I see Towles being under the center are goal line, or 3rd and short. I'm gonna say 25-40% of those will be under center. The other 60-75%% will be in the shotgun.
I can't see anything close to that mix, more shotgun than not. I agree with Rhavicc. I wouldn't even mind having JoJo back there a few times, I think he was much better at hitting the right hole in the Wildcat, and we did get a trick TD out of it.