There is a really cool video interview over on the Guitarnoize blog. There are 4 parts and Seymour talks about all kinds of pickups and designs as well as some of the artists he has worked with over the years.
One of the coolest parts is when he talks about the Tele-Gib.. I built one a while back because I thought it was one of the coolest gutiars I’ve seen. Basically Seymour took a Tele and put two humbuckers that he built in it for Jeff Beck. Another unique point is he gut the Tele bridge to accomodate the pickup..! Beck played the Tele-Gib on Blow by Blow and won a Grammy. Jeff in turn gave Seymour the Esquire he played in the Yardbirds!! Ahh the ’70’s..!