Welcome to the W.E. forum, Randy.
That pictured Victorinox/Forshner knife, I would clamp it high up in the jaws. Center the knife’s blade length, forward and aft. With it’s blade centered, slightly rotate the handle down and the tip up. I do this to try to even out the arched shape of the cutting edge so it lays perceived, centered for the most part, across the vise. I try to rotate the knife to position the tip edge height and the heel edge height to be roughly even and in-line horizontally. The horizontal line running from the tip to the heel is parallel to the horizontal jaw line, but not necessarily, running right through the jaw line…this perceived line can be below the horizontal jaw line, just parallel.
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