This might be of interest to others who are looking at making a leg vise and a wagon vise for a Roubo style bench.

Yuri Arapov, software engineer from Russia, who goes by the screen name yuridichesky, has made to his own designs a wagon vise and a leg vise a bit like the Benchcrafted ones, but conceived differently. His Lumberjocks blog clearly shows how he made them. To me they seem inventive and practical.

http://lumberjocks.com/yuridichesky/blog

If you have preconceptions of heavy and awkward Soviet-style technology, that is not right. This stuff is nice.

As a preview, here's his leg vise (http://lumberjocks.com/yuridichesky/blog/40137)