I recognize some coaches don't allow that ... and sometimes either the pitcher or the catcher may not have a good eye for how to pitch to a given batter. But when you get that magic combo, and the coach just has confidence in them, it's fun to sit back and watch them work together.
I know my son certainly changes his approach based upon who is catching him. He has definite preferences on favorite catchers on both his club and HS team where he's in line with their thinking, and he's confident they can stay in front of his breaking pitches. It gives him the ability to expand his zone a bit and work his spots. He's more relaxed with someone solid and smart receiving him. There's catchers where he won't even blink throwing a full-count curve with a runner on 3B ... and others where he (or the coach) won't take that risk.
Oh yeah, the parent thing ... I've learned to just sit and watch quietly, walk around and shoot my still camera if I'm nervous. My wife can't even handle a suspense/thriller on TV, so she's doing contortions in her chair. A few years ago, my son was also a club-level goalkeeper on a s-o-c-c-e-r team ... some games he'd have to handle 25+ shots-on-goal a game. My wife would be hiding her head. He just comes off the field wanting to know what's for dinner
