What a cool idea! Much less damageable than cards. Guess the odds of a kickstarter upgrade to poker chips is not in the plans? (hint)(hint) Would still need the character reference sheet to pass around.
Just put the cards in toploaders if you're worried about them getting damaged. The OP's idea is good if you're trying to avoid printing out the cards but if you have the option to buy the game and put them in toploaders, not sure why you'd want poker chips instead.