I am pretty sure patent leather is plastic coated leather. I hope no one is calling it just "plastic". Miroir is pretty much plastic (PVC-polyvinyl chloride).
only SOME vernis items are leather inside. Basically the outside is always embossed patented leather, however the inside can be leather, synthetic/plastic material, or cotton lining
The LV site and product card describes it as scratch-resistant plastic coating on the leather! I'm pretty confident of it being not as prone to scratches as some might think. But yes it would pick up ink-type stains (newspapers, magazines, etc) more easily due to the plastic/rubbery coating