However...so I don't derail the thread...
I think that a safe and secure place where a pickpocket can't snag it without you knowing it is important. Growing up between crime havens like Detroit, Pontiac, and Flint, I have learned a few tricks.
One is keep your money seperate from your wallet, and don't be a credit card junkie. A pickpocket may snag my wallet, but all he'll get is a couple of personal items, my liscense, and a credit card with a lot of security measures and insurance on the card. That'll suck, but it won't break me. My money is generally in a clip, and I generally don't carry more then 50 bucks. I highly suggest not carrying more then 2 cards, and make sure you have the ability to call those 2 cards right away to cancel them if anything were to occur. Have those credit card co. phone numbers in your cell phone.
The other thing is keeping it in a place that is harder to pick. Front pocket is usually better then back. Loose deep pockets are usually better then tight shallow pockets. These are just some examples. Also, having that consistancy of where you carry it can be helpful; you might feel "naked" without it being in that specific place which will alert you if it is picked.
pay particular attention to picking opportunities in large unfamilar places, especially if you are a tourist. Watch for distractions...if something out of the ordinary captures your attention, you should be at "code orange" paying attention to the rest of your surroundings.
Your biggest concern is not a pocket picking, however, it is being mugged. If you can throw your wallet down and make a run for it, and your whole life isn't in that wallet, then this may save you from loosing all your cash. Or, if you are light on cash then throw your money clip down and run. This will prevent your losses as well. I would think more about tactics from a mugging, because being mugged is far more dangerous then being picked.
Hope that helped...
PJMOD