I have jumped onto the bandwagon and started using lipliners as a lipstick. I've tried quite a few brands and formulas, yet the MAC ones always strike me as the best on the market.

I have the colours Soar and Sub Culture, and fully intend on increasing my collection (and buying another Soar, as mine is nearly finished).

They're creamy and apply so smoothly, and last much longer than a lipstick would on the lips, as well as having that beautiful matte finish.