I mostly fish from a boat so i have a boat box, if for the odd occassion i fish from the bank i just cart my box about with me.
I love the fact that its waterproof if it rains and also it has everything i might need to use in it!
I use to take what i thought i needed from the box and stick it in the vest for days from the bank but it always resulted in my forgetting to take something

Tackle bags were always a pest when it rained and nothing worse than a wet days fishing than to have to get home and set everything out to dry!