When maverick showed us the video of one of his Cafe Bags perfectly organized with the help of Pouches clipped into the O-rings, I did the same.
I added three essential items needed for safety clipped on long lanyards then into the O rings.
I also use key straps and steel O rings to extend the reach of some items.
For example, I use a Mini Clear Pouch with a short and a long key strap together clipped together to hold an electronic public transportation card (the kind you just scan on top of a sensor)
That way, the card can be stashed in the outside Cafe Bag pocket or even fit in the jacket's pocket closest to the bag.
I used on in the DC area and several other cities have this kind of card.
The San Francisco Bay Area had a similar project in the 90's and new sensors were installed on some buses and in Bart stations.
I was very exited but before any compatible card was issued the Metropolitan Transportation Commission killed the project.
Translink is now revived but instead of being implemented all over the Bay Area they are still doing "test runs" on Muni. 10 years later!
Hmmm... the Amphipod looks pretty cool. I assume it would not easy for someone to lift off of you?
It's not as secure as say a double steel cable money belt with a proximity alarm and a built in GPS, pressure welded iron toothed mouse trap and a lightsaber. I'm sure that a talented pick pocket determined enough could snatch it away, but it is small and unobtrusive and has worked great for warm weather trips. ;)
This works pretty well for a travel wallet too, if you are down to a very minimal set of stuff. I use it when running. And you can even stuff an iPhone in there!