Killing ball

[BigGref]

I was watching a scrimmage (ours got double booked) and thinking about the upcoming season and I came accross something in the Officials Manual.

I just wanted to know if anyone puts their hand straight up (like the signal for Dead ball) right after the ball is dead, a sort of additional visual cue for the players and everyone? I see NFL using this mechanic and wondering if anyone else uses this; Pros v cons, thanks!