So I take it that the SOG ones are just a sprint run.
It was initially planned as a SOG product, but at one point it was determined that it would be a better fit with the Tool Logic products so it was shifted there. By that point howevere the handles had already been molded, so it was make a run with SOG branding or toss out a whole pile of perfectly good handles. I think SOG chose correctly there.
Def