I can tell you that our HS coach and his assistant wore baseball pants every practice that I was ever at. I don't think I'd have a problem with it either way, I honestly think it's pretty silly that the coaches are required to wear a uniform during games in HS....but rules are rules. I'd have no problem with guys wearing a golf shirt and a decent pair of khakis or shorts if they want to. You don't see football coaches required to wear jerseys or basketball coaches out there in a tank top and shorts right?