Ah, do they? Don't really taste like it.
Well, the burning thing is the main issue. It's just getting the atty away from the filler. So if they do have filler... they appear to have done that well. I liked them.
I'm sure they work great initially (probably even better than normal Edition1 carto's) but the burning of the material when dry and the fact that they eventually get clogged up and hard to drag is why these CE2 carto's have huge potential.