It's interesting to say the least. Being a head coach, I believe is mostly about two things: the ability to organize and the ability to understand and motivate players. It's also pretty important to have plenty of NFL contacts among the coaching ranks and have the ability to identify the best assistant candidates and have their respect, enough that they would consider being on his staff. For that reason, I don't think is impossible for Rivers to come in and be effective. I think he's very smart and has been around long enough to have plenty of candidates in mind. He's also the son of a coach, albeit a high school coach. That said, it seems like it would be an extremely difficult challenge to be able to come in and do the job without having experience on a coaching staff, preferably at the NFL level.