Sure. But I'm not sure it's that significant to my point. Consider that the switch from C to G is not really a major adjustment in regards to skill or scheme. Of course, the opposite (switching from G to C) would be a major adjustment.
But generally speaking, if a Center is switching to Guard the primary concern would be the preference for more size at Guard (and Centers tend to be a bit smaller). But Ruiz has the prototypical size/frame to play either position.