Greg, I know what you mean about the way the OD green clip can disappear in a pocket. Unfortunately, my Delica clip has loosened to the point where the whole knife has tried to disappear a few times. (It was stuck in our Christmas tree once from the time we brought it home until the day we threw it out.) I have an OD Concealex Delica neck sheath on order from Mike Sastre so the problem of it trying to get lost should be a thing of the past.
Since, as John noted, these were discontinued prior to '98, any that are available should have the plastic clip. Now, the only problem is finding them.
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Cheers,
--+Brian+--