I used this on a recent trip to New York. It provided exactly what I was looking for:
* Safety: You can carry this under a jumper or a jacket, which makes it super safe against pick-pockets * Space: plenty of space for passport, credit cards, metro tickets, ... * Accessibility: The design of the different compartments make it very easy to access all your items.
It is really a great product. No idea if the RFID protection is real or just a gimmick.