Here are a few others to consider.
http://www.grizzly.com/catalog/2008/Main/616
You can see the clamp set up like JTR fabricated and did to his. Maybe I will have to sit down and think and make a nice little table top lip bender. Something strictly for lips. Nothing fancy. Down and dirty. I think I will put it on my list, #29,846, a long list. I would like one for my own cellar.