He was only ever a play caller for one year when he was OC at Utah St under Gary Andersen & then when Andersen took the Wisconsin job he kinda lucked into the HC spot at Utah St, so despite the fact he’s been a HC for 8 years, he actually doesn’t have that much of an extensive history as a play caller.
Most of the success he had at Utah St was due to having innovative OC’s like Kevin McGiven, Josh Heupel & David Yost. So, to answer your question, no I’m not high on him as an OC & wouldn’t want him here.
He’s a solid G5 coach, but as a pure play caller isn’t that great, his OC’s made him look better.