There are fans of leathermans current knives? Huh... Dont get me wrong, some of there past models look great(e306x). All their current stuff uses 420hc steel though, which is insufficient for a dedicated blade in my opinion.
If you google sanrenmu, you can get some cheap 8cr13mov(equiv. to aus8 or 440C) knives for under $10. Same factory that pumps out the spyderco made-in-china knives makes them, so you know its atleast good(and some of them are very good). And the edge retention will be significantly better than anything using 420hc.