Interesting.
I have seen those DONIC blades - they are cute. I think they also come in special handle shapes - like curvy. A friend of mine has one. The one he has is all round blade, not the OFF one.
You may have heard of
American Hinoki. They are custom made blades. I have tested two or three of their custom blades. There was one blade with cork. I thought the cork handles are better for me as I get blisters and sometimes my hands are slippery too, so the cork handle helps. They are the plus points of cork. After testing that blade for a while, I did not like the cork feel. I think the cork can get harder when the time passes and that can reduce the feel of the blade.
Dr.Neubauer has used cork for some of its blades. I think the barricade blade has cork.
It's time to research on cork.
Note: To protect my hand from blisters and to make my hand not slipper, I use cotton grip. I use this Tourna Grip. Last week, at the club someone saw me putting a grip, they started doing it. It is use and throw grip. A roll will last for 2 to 3 months.