Carolina-
We differ a bit on that, it's my opinion that additional reps, no matter how many, can't make an average hitter significantly better.
I played with a couple of guys (Long, Elmendorf) who didn't have any problem playing both sports but, admittedly, they weren't quarterbacks.
I asked the question at a 2013 Dugout Club meeting , "Will Kenny Hill play baseball?"
I remember the answer being a very positive 'yes', almost as if that condition was part of his agreeing to come to A&M,, but I may have been reading between the lines there, not sure, it's been a while.
However, I've been assuming that Kenny was an exceptional baseball talent, I'll defer to Doubleday's observation on that, he's seen Kenny play.
That being said, if Kenny could stop a ground ball (3B), or chase down a flyball (LF), have a reasonable on-base percentage, steal a base every now and then, he'd be an upgrade over what we had at those 2 positions last year.