I am looking at building a workbench and looking at a less expensive version for a vise. I came across this website and saw this pony clamp version being used as a vise and wondered why i don't see more of these used on benches. Has anyone used this type of vise and what pros an cons are there. Please use the link below to view the vise/workbench. http://www.blumtool.com/pages/fullsizeworkbenches.html