[officialtony]

For what it's worth, when I start with new folks, I put them behind the plate (hopefully lower level games ). I find I can watch what they do more efficiently. As PU, I have little time to read what my partner is doing right or wrong except " covering ' them on their own plays. If they can work behind the plate, they will learn the bases fine. If they struggle behind the plate, offer assistance between innings and let them adjust. You can watch mechanics, balls and strikes, positioning for plays and pitches, all while they are behind the plate. If you are behind the plate, you cannot monitor them as well.
Just my humble opinion.