I love the RFID Blocking Passport Pouch I bought in the spring, and have used it a lot for summer and fall travel. In fact, I find I use it much more than I thought I would.
But I wish it had a credit-card sized pocket on the inside.
I often split my credit cards and ID into two or more groups when I travel and carry them separately. So, for example, while I may use a debit card frequently to take money from an ITM and thus carry it in my wallet, I rarely ever use my credit card overseas. I usually carry it inside my passport pouch (not least for the RFID blocking part), but it can slip out if I take out my passport. Having a small inside pouch or pocket for one or two credit cards (etc.) would make the Passoprt Pouch even better.