Let me say right off the bat, if you use these the way they're packaged, you'll go mad trying to get the product out. The pigment tends to clump in small balls, which don't go through the sifter. And if you dip your brush in it, you'll get quite a bit of fallout; you can use a brush, but be sure to use a small, tightly packed one (like Sephora's Smudge Brush), and smash up the shadow in the lid a bit first. My modus operandi when I buy a new True Romance pigment (oh yes, I've been collecting them): pry off the sifter and toss it in the trash, then apply the shadow with a pinky finger.
This sounds like a hassle. It is. But you do get some pretty results:
Kat Von D True Romance Pigments: Torment, Johnette, and Conquer
Eyeliner: Lorac Front of the Line PRO
Mascara: Urban Decay Lush Lash
Can be used dry or wet
Shadow gets clumpy
Hard to get out of sifter top
Hard to apply with brushes
Verdict: I'll be honest. If I could find a better formula with Kat's bright colors, I'd ditch True Romance in a second. They're a pain in the posterior. But until then, I'll put up with the clumps.
(Also, if you're thinking about getting some, there are more colors inside Sephora stores than they show online. In addition to the ones online, they carry Rooftop, a dark maroon, and Conquer, the green pictured above).