Pros : I am not sure if I like this product or not. It does allow for tracing of lines and ridges on glass. I have used the black and gold metallic and both have nice finish. Especially, the black isn't coal black but rather has a shiny look.
Cons : N/A See above.
Other Thoughts : Be sure to shake well each time before using. Also, be sure to use the tips provided. For a while, I just cut the extended neck and then spread the paint. It doesn't lend itself to good control that way. If interested, give it a try, it is cheap enough to play with. It cures real well at slow tack fuse.