And as Running Game Coordinator, he would have worked with TEs in the blocking schemes, at least more so than WR. And a first time OC isn't going to be tasked with QB responsibilities when they have no QB experience. Sure, he probably could have coached RB but I'm guessing it was more of a priority to Holmoe/Bronco to retain Reynolds than Empey. Both because of the length and diversity of experience he could offer.