It's clear that they have advantages over a Record Vise or Shoulder Vise. But what is different from, say, a Moxon vise or other Twin Screw Types?
It would help if I knew exactly what kind of work I'd be doing, but that level of experience will come with time. I simply don't know, other than understanding the explanations from Chris Schwarz about working on board Ends, Surfaces, Edges. The front vise being for Ends.