Back on subject please gentlemen.
Matal knuckles are illegal in my state as well. Now here is a good way to get around that. Legally. Carry a roll of quarters and some soft, supple (think kid leather), gloves. Driving gloves work good for this purpose. The gloves will protect your knucles, and the roll of quarters will take the give out of your hand. The best part is that I have yet to find a city, state, or nation that has made legal tender illegal. Just some food for thought.
And yes, some men do wear braclets. I have a medic alert braclet tattoed on my right wrist due to my diabeties. It has saved my @ss on more than one occasion. You can't say it ain't manly, I sat through 2 hours of pain to get it there. My "unmanly" jewelery is permanent!