I should clarify... I noticed that with the width of the protected pocket on the pants I'm referring too, the pocket clip did not lay down like a Mk1 or mini's clip does. Not being an expert, I'd guess that the clip has a much lower profile, to minimize bulk since it may be carried in pocket more than a more typical EDC knife, and I can envision the kind of pants with thinner material that would suit this kind of clip perfectly.
Still haven't gotten the opening down...
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Ors, MAE, MT-BC
Memento mori
Vulnerant omnes, ultima necat (They all wound, the last kills)