I had the X until 58K. Then it become the wifes.

It's unavoidable ....jeans, etc. Just abrasion wear.
Leatherique is useless on coated leather.
It's like the old wives tale, just like cleaning windows with newspaper. The newspaper of *yesteryears* is not the newspaper of today.

A mild cleaner, foaming cleanser-brush it out to agitate the dirt and then a couple of MF water wipedowns. I stopped *conditioning* coated leather a long time ago....and it's not for a lack-of product. I have shelves and shelves or product.