I looove monogramming....I do it to lots of things. I have an LV carry on and I had the luggage tag monogrammed and it looks really good. I think it's a very classic thing to do. I think LV
used to monogram a lot of their leather goods for the purchaser. On the vintage peices, as in the picture, there is a brown leather oval/square that would usually be stamped with the owners initials.
On eBay, sometimes you'll come across a vintage Louis with someone else's name.