I don't think you missed a thing Mike - nice catchI posted this in another thread but I don't expect it will be seen because of the title.
When I look at the image;
Am I missing something?
They would have needed a piece of scrap clamped in that vice also to get that close to the edge.
I made one like this and I need to clamp extra scraps between the clamping plates to get near the end like that: