I tried them while drawing this crocus. They are like butter, but leave quite a bit of "dust" that at first I mistakenly tried to brush off (that explains the smudge in the upper left part of the picture. For the rest of the picture, I removed the "dust" the PROFESSIONAL way - I blew it off! I think maybe there is something about these amazingly soft pencils that I have to learn, but for now I am not totally displeased with the end result.
As usual, the original looks a bit better than the photo.
I'm off today to work on ephemera packs with my friend Nancy.
See you later.