I have two quads so far: Classic Nudes and Canyon Classics.
The texture of these eye shadows are very smooth and buttery (which is what you want with mineral mattes). There is a lot of fallout when you apply (puffs of product cloud out around you if you're too rough applying it) so your best bet is to use a primer on your eyes and pat the color on, then blend. The stay power on both is pretty impressive: I rubbed the swatches I had on my hands pretty well and it took a minute for them to fade away almost completely. I haven't tried them on with a primer, so I'm assuming they'll last at least 8 hours with one.