Yes, I do think this is good. Only because testers won't get yelled at by the other pedestrians and everyone will be happy. So the testers won't have to worry about being judged on why they are texting while walking

Yes and no. Only because yes after a while we should get a brake to sit because our legs would be killing us. And if we were only sitting we would be sitting the way our desk is positioned. We wouldn't want to turn our head to look at the teacher because sometimes it is uncomfortable. Or we should just get raised desks and stools so that we don't have backs to our chairs so we can't really slouch In a stool