I think this article helps to explain what the Suns want to do at guard. Booker doesn't necessarily need to be a point guard to distribute.
By Kellan Olson Arizona Sports:
When it comes to a specific guard coming off the bench, Williams focused on the concept of that guard often spending time playing alongside one of Paul or Booker. Who fits that role starts to lean more in the favor of someone like Moore, given what Williams said above.
It alludes to the possibility of Williams “staggering” his lead guards more often, meaning the coach is attempting to keep at least one of his two key players on the court at all times.
https://arizonasports.com/story/247...tions-at-guard-carter-felt-wanted-in-phoenix/