Good info! I wonder how it compares to the antimicrobial action of copper (and copper alloys).

Copper as an antimicrobial is not new - the use of copper as a disinfectant long predates the germ theory of disease, possibly as far back as the old kingdom in Egypt (before the Trojan war in the Homeric epics).

There is an alloy of copper that looks very much like stainless steel, and was in common usage in hospitals years ago.