I played QB/DL in high school. I think what your source stated is being a little harsh on Howard. Could certainly be true, but look at it this way: DL is hard on a body. Sometimes really hard. Imagine going through a full game of beatings on a DL and then also having to run the offense, pass and run the ball. You never leave the field.Info I got was he didn't get many reps on D due to conditioning. School would be a 3A in Iowa so 2 way play is kinda expected out of your top players.
Guessing we targeted him as a DT from camp rather than film. I believe he could be really good, he just has a ways to go.
It can be done if you're a DB/QB, because the amount of hits you take as a DB is so much less. DL is something different (and so is playing QB)