This hire reminds me of a move USC made years ago when they hired Ken Norton Jr. as a assistant coach. Norton Jr. had only a few years of experience coaching in high school but was a solid hire for the program.
USC is a silver platter of talent. Any DL coach would excel there. This isn't a fair comparison either.
You don't just throw talent out on a field and it plays. USC has always had talent, Texas has always had talent. Someone has to do something with that talent from the HC down. Mike Vrabel was hired at Ohio St as the linebacker coach immediatly after he retired from the NFL he had absolutely no coaching experience. He is now coaching in the NFL.
Give him a year before you hate him. Everyone hated Bray as a hire for linebackers. Now everyone wants to give him a raise so he doesn't leave for someplace else.