Un-laminated graphics have no UV protection, so they'll fade quickly. They'll scratch easily, they'll also have no chemical resistance, meaning soaps and detergents, road oils, fuel, pretty much if anything gets on them it'll penetrate the ink, stain it... For interior graphics, banners, posters you can get by without laminating, but not on a vehicle. Cut vinyls are the answer for no hassle stripes and effects, but you're limited to cutting single colors, then putting them together for sales, or installing one color at a time. For printed on vehicles get a laminator, you'll thank yourself when you can do it all, and you won't have customers coming back on you for providing something that didn't last. There's plenty of used ones out there that still have a lot of life left in them, and affordable.