We are also worried that we don't know how these very small nano-particles of silver may impact our health. In addition, what happens after you wash your antimicrobial clothing? The rinse water with these anti-germ chemicals ends up in our water supply and environment -- how will this impact our wildlife, food and our health? We already have problems with livestock antibiotics and increased germ resistance to antibiotics. A similar thing may happen here.
And here's another thing to think about: we are learning more about how helpful germs keep our bodies happy and the environment healthy too. We don't want to knock off the good guys.
So, all in all, I would not recommend antimicrobial gear. Thanks for your great question.