...go back and watch most of our Big12 opponents last year and you'll see that nearly all of them ran 2 PG's most of the time. That's where the game has evolved. There are a lot of CB'ers who are still stuck in the mindset that you can only have 1 PG, 1 SG, 1 SF, 1PF etc at a time on the floor.
KY has said he sort of sees the 1 thru 4 positions as the same position. Dallin and Demin will log a lot of minutes on the floor together this year. We'll also see rotations where Crawford is on the floor with either of them or Baker on the floor with either of them. Most if not all NBA teams run multiple PG's on the floor at the same time. The Mavs ran with Luka and Kyrie, Boston with White and Holiday (but then often had Jayson Tatum facilitating the offense), Indiana (Halliburton/Nembhard) etc.
Today's basketball isn't like your Dad's and GrandDad's basketball.