Personally, I don't like hearing these terms used by an official either because it sends an incorrect message to the coaches, players, and fans. That incorrect message being that reaching and over-the-back are fouls.
Our job is hard enough already, and could certainly be made easier if there was more widespread understanding of the rules.
That being said, I went and watched the president of my local association work a couple of games last week and three times he said "on the reach" when he called a foul on a player.
He's working the regional final this weekend, so I guess it doesn't really matter.