bourbonbasted, if you're among these guys who take a shoe polishing evening one a month, it will do no harm also to treat your croc shoes with cream. Otherwise once every four months could do the trick, just to be sure the pair won't dry up. It dries regardless of wear.
Somehow I can picture Lapo Elkann wearing those naughty Dunhill hiking boots with just about anything. Navy chalk stripe flannel would be just fine and dandy.