So I've picked up these pencils - Graphitint from Derwent - after hearing some good things about them in several websites. I have used them to complete some tutorials online, but I haven't yet tried them on my own so to speak.
First I applied the pencils dry with a light application, just to see how the colors worked out on the paper. Then I applied water to the whole thing and the colors became a lot brighter, it makes a huge difference (the pigments seem to be quite good).
After that I added a few more small details with the pencils and wet the drawing again. Finally just added a few more touches with the dry pencil.
I really like how it came out and I think you can get very fine detail with these. They also make a good medium for sketching. Overall a great buy, Derwent never disappoints!