I can't share the love for fanny packs. First off, I find they are too small & therefore are too restrictive of the gear & water I can bring. Second, I find them much less comfortable than a day pack; especially if wearing a belt knife.

I do find my self using one occasionally (most recently when I forgot a daypack when backpacking in; my large pack's lid converts to a fanny pack), but it is no longer my first choice for any situation.
_________________________
Victory awaits him who has everything in order — luck, people call it. Defeat is certain for him who has neglected to take the necessary precautions in time; this is called bad luck. Roald Amundsen