Tim,
Very nice. Thanks. I remember working at SAIC and we used signed stamps like this. I put all of the engineers stamps into the drawing boarder's XREF, onto their own layers with the engineers Initials and ON for the layer name (STAMP-XXX-ON). When needing them turned off, I would rename the layer to Off (STAMP-XXX-OFF) and save the XREF. That would drive the entire set to turn off the stamp without having to manually do it inside the drawing that takes longer to do and control.
Using Sheet Sets and layers like this turned a (2) person job of editing 50 to 100 pages (4) hours each, down to 20 mins and 1 person. It was a blast working there.
Thanks for sharing!
JRR!