I would have no idea how many Swede factory knives he would have been exposed to in the USA at that time, but certainly Suomi in the Finn enclaves in the states in his youth, and later in Finn Town area of Bonner/Missoula, the Finn there as numerous as the Irish working the mines and lumber mills.

As for the design of THESE above Ruana blades, as already commented, the resemblance to a Marbles blade outline is certainly there.

Also, Rudy got into business and also went with the unitized cast aluminum design because hunters were tired of factory knives getting loose or coming to pieces, and everyone with old American knives can attest to this tendency.

Although he may have independently designed the blade, he may also have simply had a hunter hand him a Woodcraft coming apart with broken gutta percha pommel or rattling aluminum and loose guard from shrunken or rotting leather, and asked if could he make one of these, but more solid.

Either way, make it he did, informed by Finn tradition of what a handle needs for pulling cuts.