Review (5/5): A comparison against Kat Von D's tattoo liner...
APPLICATION: The liner was inky right out of the box. The brush is stiffer and doesn't come to as sharp a point as the kat von d liner, however, it does go on MUCH darker and inkier, so better if you tend to do a thicker cat eye. The liner ink itself is quite 'sticky,' so if you need to wipe a mistake off or refine an edge, you need to scrub a little harder than with the kat von d liner.
SMUDGING: I usually finish with a mineral powder dusting over my eyelid to set the liner. After my bike commute this morning, I noticed that the liner did smudge a bit under my eye (but somehow my eyelids were still fine).
REMOVAL: As for complete removal, I had to switch to an oil-based remover rather than just my normal face wash and washcloth.