I haven't been vaping on it long enough to tell if this coil will hold up as long as a cCell (my go-to comparison for all ceramic coils!) but so far so good! joyetech recommends not washing them in water but instead to just dry burn it and wipe it off (I use a Q-tip) and this seems to restore it nicely.
I don't know where you read the part about Joyetech recommending dry burning instead of washing but I'd like to advise against it.
The ceramic is surrounded by good old cotton as a wicking material, if you dry burn to the point where the ceramic/coil is clean you'll set the head on fire - as I just did.
I think I'll stick to Joye mods and leave their atties alone, they're not good at them imo.