being able to type C12K for those of us with typing deficits is a big plus.

How about Guangxi natural water stone (since the box says "natural water stone").

I could learn to type GNWS, I suppose.

But sellers continue to sell it as a 12,000 grit stone:
Buy Natural Polishing Water Stone, Water Stones, Sharpening - Woodcraft.com

So, I really don't see where it makes a hill of beans.