Ken It is a nice design idea, I like the adjustable pressure on the feathers, Something to think about for sure...
Would be nice on my shaper tables for my raised panel door work ( Rails, Stiles etc. )
Sal
In a comparison to Woodpeckers version, the JessEm doesn't have larger lobed knobs. So my thought is the Woodpeckers would be easier to use. Only if Woodpeckers offered theirs a few months sooner, I would of jumped it!!!