Do you leave it hanging outside of the bag all the time?
When you use it as a charm, are you using it as a charm only (no $ or keys inside)?
It's such a cute look!
I hook the coin purse to the outside of my Keepall when I travel. I normally have my handbags in their dustbags inside the Keepall, so I use the coin purse to hold my ID and some money for easy access at the airport.
I have one hanging on the outside of my speedys at all times, I keep my most used cards in it, like my debit and license. Makes it so much easier, no digging in my purse!