In kitting out my workshop with guitar luthier tools, I really wanted to get one of these but they seem only to be available in the USA and the postage is as much as the vice so I decided to build my own.
Here are some very loose plans I sketched for the vice I built from oak firewood!:
Here is the finished vice:
Extremely useful when carving the cello necks too.
And here it is in use.