The best kind of cases with the look and "feel" of the original body are Aluminum cases. Metal. Unfortunately they all degrade the signal one way or another. Be leery of anyone saying there are no signal loss. One look at the field test mode will show significant loss.
If only a case maker can produce cases or bumpers that has the metallic look and feel and not made out of metal.
If only a case maker can produce cases or bumpers that has the metallic look and feel and not made out of metal.