These pens hurt my soul a little bit because I want them to be so awesome! And for about the first 2 times you use them, they really are. I still recommend them because I really like the feel of these and the product right when you get them is great. BUT. they dry out so dang fast. It's disheartening. Sigh. But there are still the typical Sharpie colors to play around with and I do grab these when I know I'm working on a particularly smooth surface to see if I can create the look I'm wanting for that piece (i.e. a bit streaky on purpose).
P.S. the black Sharpie used in this video is very nicely demonstrating what I'm talking about above (boooooo. hiss.)