i just got mine Fällkniven S1( a used one), it sure looks good to me, much stronger than any other knife i got. havent test it yet, though.
i got both the nylon(cordura) and leather sheat. The cordura sheet doesnt look that lousy to me, actually i think its pretty good. it's pretty thick and 4 steel things prevents the knife from slicing thought the sheet and a clip thing on top of the sheet to secure the blade.