S..Some people do not realize that there are different types of shoe and boot polish. The cream polish for patent leather shoes is one type. But then for regular leather there is a wax polish and a cream polish. I hate to say it, but there are also, now, synthetic creamy type polishes made of some ghastly petroleum product that a) smells awful, b) leaves a sheen, and c) does not polish nearly as well as proper polish.
It is a newer version of the liquid polishes still available, in that it provides a quick way to achieve a shine in the short term. The fact that it does the leather no good and is an inferor shine holds little interest to those looking for a fast effect.
Hopefully, butlers are not of this frame of mind. However, why a wax polish and a cream polish, and when does one use one and when the other? The answer is simple. The wax has better water-proofing qualities and the cream is better at keeping leather supple. So the answer is to alternate wax with cream when polishing a particular pair of shoes...