Yes, it did happen to me for a while. I usually use a full size Zippy and made the mistake of putting my ID and debit in the Cles for quick trips without a wallet or bag. I quickly found that I was using the Cles as a main wallet. I recently put my ID and debit back in my Zippy because I do love it and only keep excess cards (savings, gift and insurance cards) in the Cles. It's a small piece but holds a ton! It could totally be used as a wallet if you don't need the compartments of a full size wallet.
Your cat is SO. CUTE.
Back to topic, i only use my cles as a wallet when i am going out, need to travel really light, or have some reason not to take my entire wallet out of my bag. I love wallets!!