I don't normally wear lip liners, but I was happy I tried Colourpop's as they are so comfortable and easy to apply. I actually tend to wear it as a lipstick and it doesn't dry out my lips.
You do have to sharpen these which can be messy, but I have the sharpener from them and it has a lid to catch the shavings. I also try and use the shavings with a lip brush so I'm not wasting product.
Sometimes the actual product comes loose from the pencil and starts to slide out, so I open them with the lid facing up so it doesn't fall out. I don't really mind this because the formula is so nice and the price is great too!