I agree that bone makes a much more pleasing handle than does Delrin, but I think it is important to remember that most Camillus knives were made as tools for people who used a knife day in and day out.
I have repaired and customized more knives than I can count, and I can count on one hands the number of Delrin handles I have seen that failed in normal use. I rarely ever see a broken Delrin handle on a knife. When I do see one, the problem is usually a pin crack and as a rule the knife came from the factory with the crack or else the pin is located too close to the edge of the handle, causing the crack.
Rarely does a Delrin handle fail even in rough usage on a knife. That is why most US knife companies moved to Delrin as the default handle material for user knives. It is durable, can be colored, it can molded to look like bone or stag, it does not off-gas, it is extremely stable and it is not expensive to make. In short the perfect handle for user knives.
However, I do prefer to carry a bone handled knife.
