I grew up with dual use wallets and over time these wallets have grown to enormous sizes - credit cards, membership cards, ATM cards, driver's licenses, insurance, cash, etc. How does this wallet work? I had to throw away the 4 cards I was carrying, but I can probably do without them (at least every day). Cash was a big problem, especially as I also carried foreign currencies on my many world trips (pre-Covid). I had to select a few emergency tip slips and leave the rest in my old purse. After all this the wallet has actually gotten pretty thin (compared to the previous one, so that's a plus. Is this my wallet? For now yes. With international travel and foreign exchange? Not sure. In some countries using a credit card is easy, in others Cash is still widely accepted in countries, and of course, depending on the credit card, there can be significant foreign transaction fees.If that were the case, he'd go back to his old wallet!