I am also super impressed with just how long-lasting it is. I did a swatch in store on my hand Sunday morning and it didn't budge at all until I got home that night and used make up remover on it. I must say though, the most amazing thing about these liners is the price! It is only $7.95 AUD and I believe there are about 5 different colours available.
I can see only one drawback to this liner. Since it's so soft, it requires frequent sharpening which means having to re-purchase more often. No biggie though :) In fact, I think I may go back to Priceline and get one in every colour!