The conference that Detroit Catholic Central (Amines, Iowa State's Rojas, Michigan/Indiana's Gilcher, etc) is in used to do matside weigh-ins some 20+ years ago. They don't anymore, but did for 3 or 4 years.
What DCC ended up doing is they started sending their 'B' squad to all conference meets/tournaments, which is something they still were doing up until a couple years ago (even though the conference doesn't do it anymore).
DCC has been a Top 25 program in the nation for decades. They wouldn't have been had they followed those sort of weigh-in rules for their 'A' Team.
The schools competing at the highest levels will never consider it unless forced.