Jack Nicklaus always played well at Augusta, which is notorious for favoring a draw, in spite of his normal fade. He did ultimately learn to play a draw, mostly because there were shots at Augusta where he really needed it, but his stock shot was a fade, and he played most of the time. Even in situations where a draw might have been the better choice, he would only try to turn the ball left when absolutely necessary.
If you consider that even someone with his talent would have difficulty playing a dependable draw, it really amazes me when I read comments from 15 handicappers who say that they draw and fade at will. I don't know who they think they are kidding, but I'm not buying it. I've played a fade my whole playing life, except when I'm playing a slice. Trying to learn how to play a draw only got me a duck hook, and made me have relearn how to play my fade. I don't mess with it any more.