For carving beef or lamb, maybe pork, it's hard to control the thickness or thinness without a pique.
Old-fashioned carving sets used to include one, but usually not long enough and the knives with them were not top-notch. I like a slightly-serrated meat knife so I can go as thin as I want. The Pique gives good control.
Amazon, of course, has good stainless ones. Once a hot meat has rested a few minutes, use that thing and get exactly the clean slices you want.