I'm not conceding that the Spyderco hones hurt the DMT hones just yet. I've lapped an Arkansas hone on my DMTs, and if that sucker didn't kill them, I don't see how anything could.

The references I've seen to wrecking diamond hones usually involve sharpening with too much pressure. The pressure loosens the diamonds, and they start cutting away at the nickel plating, which is pretty soft. It might be possible to accomplish something similar by using a lot of pressure while lapping, but it would be hard to duplicate the amount of pressure you could exert with a knife edge.

I'll be interested to see what comes of this thread.

Josh