Scott,
For some reason, this popped into my head...
When I was younger, my father had a table (made by black and decker I believe) that was more or less a vice-table. It had these plastic dolls that you would insert into various holes in the table, insert your piece of wood, then using worm gears, crank the table together (thus clamping the wood).
One thing of interest here, is that you could independently control the left side from the right side (to a point...perhaps 50 degrees of difference).