If you ask me, yes I want a PG with good driving, I like it over JS. I therefore also prefer training 1vs1 over jumpshot for PG's.
In my eyes, a PG needs at least OD, HA and DR. Then, he also needs a balance of PA, JS, JR and IS to your liking. He doesn't need all 4 of them to be high, but their total must be good. I want this for all my players, and the PG probably has more PA but the total needs to be in balance. This way, I believe a player will always have a good option in any situation, to either make a good pass or be able to score.
So I would train 1v1 to increase driving, as it also trains HA, JS and if you train forwards it also trains IS. 1v1 and PA usually gives you enough HA so you don't need to train it seperately. 1v1, JR and IS usually train JS enough so you don't need to train it seperately either. You always need OD.