A little back history...
Culprit came out with their Captivator skirted slip sinker heads back in 1987. Those were some of the earliest versions of this idea sold commercially. Billy Bowen (GA) originally designed the bait modification for himself, took it to Eb Hargrove, a local Lake Sinclair guide, who in turn took it to John Zook, then tech-rep for Classic Mfg. (Culprit), who ended up contracting with Billy to do most all the manufacturing.
Back in Texas, and slightly before all this happened, a Mansfield area fisherman named Jim Brown designed and fished a slip sinker that carried a fiber skirt, and was then fished similarly to a jig and pig. Same basic idea, but I don't think it ever made it outside that local area.