I found the DC's to be much to aggressive in removing metal. I now have a pocket arkansas stone.
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I agree. I've had a dc4 for a few years and quite like the ceramic side, but never use the diamond side, it's much too rough.
When out and about, I usually stay sharp by regular stropping on my belt. That has made do up trips over 5 days with general camp use.
Next time I feel the kit daemons biting I'll look into some of the alternatives mentioned above.