They do work, when they give you one. I don't switch to my folder when the knife is crappy, because they're always crappy, but enough to tear through chicken, beef, or pork. I use my folder when they didn't give me something other than the butter knife. All I want to do is eat my food and leave. I have no interest in running the wait staff ragged, I'll just let it show in the tip, if I leave one. Atmosphere or ambiance or some experience don't concern me. If the food is edible, I'll make my way through it with the cheap steak knife, the SAK in my pocket, or my bare hands if need be. Most times, it isn't a fine dining experience. When there are infants wailing, arguments and parties at other tables, and the bus boy is non-existent, and they didn't bother to bring me the proper silverware for the dish, I'm just going to use my own knife because there's no reason not to. I sit at a booth whenever available, so noone from three sides knows what I'm doing or eating anyway. I never whipped out an Opinel 13, DDR Maxx, or an XL Espada, the knives I used where shorter or equal to the blade of a steak knife anyway. They were less tacticool since they were plain edged to the scary serrations of a steak knife. No blade coatings, no writing on the blade, no tantos, etc. Just a clean and shiny piece of metal that I used to cut through a piece of meat or bread. No one has a reason to notice or to care.