Just got back from a 17-day trip to six cities across four countries (hence four different foreign currency notes to carry, plus USD as backup), and have to say that the Bellroy Travel Wallet served me very well.

I used it as the storage wallet for all my cash, cards for airline/hotel/insurance memberships, backup credit cards, passport, boarding passes and Yellow Card, and it stayed mostly in my bag.

What I was actually using in a particular city, I put them in a small leather card case from Tod's that's not too bulky for my trousers' back pocket.

The pen is a nice touch but somewhat too small for my hands to write properly with. I usually carry hotel pens in my bag so that's not a big problem.