The RIFD wallets are of no real value. Do you even have cards that use RIFD technology? Many people don't and for those that do it tends to be gas station or transit cards.
Secure purses can be of value if that's how you want to keep your money/cards and passport safe. The main thing they offer is security from easy access. Unlike a regular purse that might unzip on the top or have a simple clasp. Those purses are easy pickens, no matter how you carry them, pun intended. But if you have or find a travel purse with multiple steps for access, or inner pouches that require steps to access, your pretty safe because they can't be easily accessed while you are distracted. The KEY with any purse or bag type, is you cannot be careless with it. No slinging it over chairs, setting it down at your feet, etc... Not all women are good at keeping it on their body at all times, and for them I don't recommend it at all.