I believe we will know the answer to the future QB situation when we know who Butch hires as OC along with any other position coach changes and comments discussing the status of the offensive system. QD has been developed emphasizing his strengths. JG has been developed as a true DT QB.
If Butch is going to continue to base it all around read option and what we have seen, DT QB, which is JG. However, he has also run a pass first, less read option offense at Cincy in the past that was successful. His current O-line is not all that successful at blocking for read option, but that could change with some of the recruits and current younger players on the roster lately. They are more mobile.
Until we see the off season moves, it appears a transition is underway to solely DT QB. Will see if the commitment to it starts next season or not.