I got a Kreiger bum bag like that one. It's brilliant. Haven't got any pockets in my leathers. Need to take a phone, wallet, change, house keys, disc lock, maybe some other stuff. I'd rather have it in a bag than stuffed down my jacket somewhere. It's easier to get to when you need it. And it's water proof.
And I have a man bag as well for the day to go to work. Like everyone else who's got an ounce of cool about them.
Check these out.
http://www.leonhard-heyden.info/en/html ... _jost.html