Suse! Why do I even bother being on BellyBelly when you say exactly the same thing that I'm thinking. :P

Amy, the pocket's just for convenience, chuck your keys/wallet/spit cloth/whatever in there and then you might not need a bag! Handy if you're just going to a walk or something and don't really need the nappy bag.

My advice would be for your friend to practice before bub is born, and also to check out YouTube for some ring sling tutorials.