I own all of the Apple leather products and have used them to treat and protect the handles on my speedy. I was so scared and paranoid of anything happening since that was my first high end bag. Well, a couple thousand dollars and two Balenciagas later, I am more relaxed about actually USING my expensive bags. I am thinking of not doing anything to the straps and trim on my new batignolles horizontal. I am going to use the heck out of this bag and not baby it, but I would like to see the natural patina process without chemical treatments interferring. Those of you with more LV experience...whatta ya think? Treat or let it go natural? Thanks!