Depends on how hard you use your users.
I don't mess with it, personally, for a couple reasons.
1. price
2. I drop my 110 in my back pocket, where it is sat-upon, oft-times jangled about with keys, etc.
3. My users get used for everything from spreading peanut butter, to bushcraft, to working on my truck & motorcycle. Some of these uses just aren't conducive to maintaining a pretty knife with a delicate handle material.