Most people put their arrays on something else - gloves or gauntlets or something - though I knew a guy back in the military who had way more extensive markings than I did, his covered most of his hands as opposed to just the palms.

[THERE'S PREPARED, AND THEN THERE'S MAJOR COMANCHE]

Most people consider actually getting your arrays placed on your body in ways that they can't be taken off to be a little extreme, though.