It is not going to change in Illinois unless the NF changes the rule. To make a long story short, the IHSA has a very good relationship with the NF and they are not going to do something that is going to jeopardize that relationship by using a rule that goes against the NF. At least that is not going to be the case with this current administration in the IHSA office.
I also do not see a necessity at the HS level. Personally I would deal with it if and when it becomes a rule. Right now I do not care either way. I do think it would cause some problems from the clock operator not starting or resetting the clock properly. I really feel this way if it was a lower level adoption. Most of the time we get a kid running the clock and they are more concerned with text messaging than paying attention to the game.
Edited for you comedians.
Peace