I've carried and used some of the older Case Damascus folders (from 1989- using the older steel). I have no experience with the newer ones with steel from Devin Thomas though.
These older blades do indeed seem rather soft. Have had a lot of issues with edge rolling and damage that did not harm some of my other harder blades with similar edge geometry.
Also, I used to own probably around 20 Case damascus bladed folders, and of those, almost half the blades had blue edges at the tip- evidence they were really overheated during factory sharpening. This was really evident one time when I dropped my stockman tip first in the dirt. The tip got totally mangled; it looked like I'd used it as a screwdriver or something.
My above comment about softness though pertains to the whole blade, even after enough sharpening that the tips have changed shape somewhat. For example, a while back I was doing some whittling on a hedge stick (osage orange, which is very hard). I had to keep the stone handy to retouch the edge as I worked, and it does work on the stones like fairly soft steel. Finally I just gave up and used a different knife, which lasted the rest of the job just fine.