Between 1999 and 2007 I lived in East Tennessee. There were Dixie and Little Leagues teams using Clemson's Logo. I know for a fact that one of them was buying Clemson Paws and having them put on Orange jerseys.
Clemson has had no issues with high school teams using our logo. It's good will. I hope it never changes. I'd be ashamed if my alma mater forced a high school to waste all that Clemson gear and buy new uniforms for all their sports. FSU did that and I thought it was a chicken crap move, disgraceful.