Both of those materials gouge fairly easily, seams trap liquids, and they probably won't like solvents, but for something that would be kept clean & dry and not pounded on, peel & stick tiles would work and there are a lot of color options...heck, faux slate would be amusing...all depends on what you're going to use the surface for.
For that matter, think about what's going under the bench before you set a shelf height, or make it adjustable. Start looking for wall cabinets, too, so I don't have to bust your stones when I inspect the place!:)