That doesn't sound like a good compromise at all. First practically speaking, you can't just leave the court building to discuss with your client if they're in chains, and it's super inconvenient based on the layout of many courts. Second, this becomes the excuse for adding audio and video surveillance everywhere, with the excuse that you know about it, so it's okay. Third, considering audio can pick up things like jokes, irrational things said in anger, or just one's mumblings to oneself, it very quickly becomes the excuse to haul in anyone you don't like by misconstruing their words. The fact that it was brought by law enforcement tells you they are looking to use it against people.