No problemo. I am in my skivvies, actually very cool Nike shorts, most everyday and they do not have any pockets. (There's a little teeny sacklike thingie that it big enough to hold one key. Definately NOT made for NY runners---who has ONE key?) Anyway, my sweatshirt has no pockets either, so I use a shoulder wallet. It straps on and is big enough to hold money, keys and a MetroCard-the esential things of life.
With my wallet strapped on one side and my Zeno music player on the other, I look like a Cyborg.
Joe(run like one too)Nation