This is a trick I’ve seen Jeff Beck do on a guitar I built for him during the 70s. It was nicknamed The Tele-Gib. He used in on songs like “Cause We’ve Ended As Lovers”, and he was seen playing it on the “Secrets Policeman’s Ball” video. He would lower the bridge pickup about 1/4″ from the strings and raise the adjustable pole pieces to about 1/16″ from the strings. This would give him extra bite without the sound being to fat or full and still be humbucking. By raising the poles keeps the stud side further away from the strings and not as dirty when the volume in up all the way on the guitar. He could make the guitar cry more when manipulating the volume and tone controls during the intro to the song “Cause We’ve Ended As Lovers”.