How did Byron Trott become the favorite banker of Warren Buffett and America's wealthiest families?

Byron Trott has helped many of America’s largest family-led companies grow from cash-starved startups to financial titans.
Since he created the company BDT & MSD Partners, Trott has guided the Patagonia progenitor Yvon Chouinard, the ex-owner of the Boston Celtics Wyc Grousbeck, and supported Shari Redstone from Paramount.
Warren Buffett once described him as a rare investment banker who becomes his client to understand the problem from the client's point of view.

I get the impression that Trott is the type of person that has a great effect on the corporate world but still remains in the shadow. Has anyone else been keeping an eye on BDT's latest actions?