Always the other guy.
That will be my blanket advice going forward for anyone posing a “Mostert or ________” start/sit question.
Don’t care about the matchup or projected workload. Completely fine with being wrong on the rare occasion that he stays out there long enough to be useful.
I’m not saying cut him. I’m not saying don’t start him if you have no other options.
But if there’s a choice to make……always the other guy.