...but to play devil's advocate, at the start of the roll there's no airflow over the elevator, so it's not doing anything. By the time there is some useful airflow over the aeroplane, (e.g. 80kts) you release the stick to neutral! Your point about the F/CTL page is what I was getting at.
So, what function does the elevator do at low speed? Is the jet exhaust enough to make a difference?