Thanks for your answer, Leo. I didn’t realize the vise jaws would be the limiting factor.
Are you sure the attachment will be an extension rather than a modification? I am trying to imagine how to extend the WE so blades can be sharpened at very low angles, but the only way I can envisage this is by lifting the knife high up.
I can wait a few more months before sharpening my Scandi knives, but it would be a pity if I found out after some time that I’ll never be able to sharpen them on the WE.