Gilles makes probably the best of the worst of this type of knife. They are not made for the American market, and are usually by all standards on the soft side. Tempered 12C27 at RC 54 does not usually blow up anyones dress. They make a beautiful knife, that they say is not made for heavy use, or to cater to the American market. Their spec on Damasteel and carbon Damascus is RC 54.
The steel makers do not find their specs in tolerance for a using knife. My opinion only !
Be well
Floyd