PHOTO (Duke Athletics): Jon Scheyer at Cameron Indoor Stadium. By TOM SHANAHAN DURHAM — Jon Scheyer took his seat at podium set up astride Cameron Indoor Stadium’s Coach K Court. He had been introduced Friday as Duke’s 20th basketball coach by president Vincent Price, outgoing athletic director Kevin White and incoming AD Nina King. Scheyer, 33, leaned into the microphone. “So, I don’t want to break any tradition yet," he said with a mischievous grin. "Do I need…