I promised a picture of the Tucker Vise. And as it is freezing in the shop at the moment, I was glad to find this old picture.
You can see the versatility you get. This horizontal mode is one of the unusual modes it permits, and I find it very useful. Particularly for holding work boards in guitar making. This, however, is a toolbox from an episode of The Woodwright's Shop. And despite the injuction, I did dovetail it.