The lasting power: I was not expecting anything great, despite the "stain" part of the name. I saw gloss and thought "easily wiped off." No. No no no. The first time I tried it, I had something to eat after about an hour of wear, looked in the mirror and it had only come off slightly where my lips meet - a quick press/rub together and it was good as new. It barely leaves a mark on cups/glasses when drinking also.
I was honestly not expecting both colour payoff and staying power, I really thought I'd get one or the other and now have a craving to check out the other colours in the range - I might need to flog a few more non-essentials on ebay first though!