I have 4 pelican cases in different sizes. They are waterproof and provide some shock resistance but I never use them for anything but multiday canoe trips for camera gear.
I find them a nuisance for a day out fishing.
My wallet is always with me in my pocket in a zip-lock. If I become seperated from my boat for any reason and have to walk out I'd like my wallet with me. A little cash, debit card, Health card, if I'm hurt, can all help me get back to the car or treated in an emergency room.
Bill