Are ceramic speaker drivers a good thing?

Looking at a new speaker, I am interested in the Kharma Ceramic 3.2.2 (although I believe this is an older model).

Years ago, I heard the 3.2.2s at CES in a room run be Steve Hoffman. It was the best room I heard at that show.

Lumin White is another line that still uses Accuton ceramic drivers,

I am not sure which the 3.2.2 is in terms of diameter, MB/MR/Tweeter, but they have a lot of drivers.

And I think there are others. Are those drivers very accurate and fast? Or do they sound hard or shrill? Of course, implementation is key

How do we define “fast”?
(There is only one “speed” that they move at any specific frequency.)

I thought that they also have pretty stiff “cones” and stay pistonic without cone breakup. But I am not 100% sure.

They (Accuton) do have distortion specs for most of their drivers (e.g.): 

History | C-CAM | Blog | Monitor Audio

Review from 2008!

https://positive-feedback.com/Issue37/kharma_cs3.htm

Hi OP:

You really really should listen for yourself. I too am blown away by the technology and driver construction of Accuton drivers but I can't say I have equally been blown away by an implementation.

I have no doubt you'll hear and make up your own mind, one way or another.