I am not a public speaker and my nature disallows me the pleasure and joy of speaking publicly routinely. Sometimes, when required by call of duty or by my official status, I would speak and confess there were moments when I wished I could have declined but could not. Because I am a person who go for 'perfection' in what I am expected to do. Most people would feel public speaking is not their cup of tea but those who seek publicity wants every chance to be called upon to speak their thoughts. You know who they are by the coverage they get in the press and media.
I was never trained to be in public eye. But as my career and social engagement progressed becoming a public figure was entrusted upon me under 'protest'. I 'received' public speaking training in my church, a nice training ground, since mistakes are less critically frowned upon (not sure if that is true since worshippers may not articulate their unkind views directly). I think I became a liturgist sometime around 1996. A liturgist leads the entire worship service and pray. He is next to the pastor/preacher for the duration of the service so holds an important role. This experience builds my confidence and ability in delivering my addresses which, as far as possible, impromptu since I 'excel' in speaking off the cuff rather than from prepared text. However, certain contents must be written beforehand to ensure their 'correctness'.
My most memorable public speaking which last more than 30 minutes was during my company's 20th anniversary cum my 60th birthday celebration in 2008. It was spoken from my heart and unprepared except for the points. I was immensely satisfied because I was given the freedom to be myself.
I wonder would I have been a qualified toastmaster? Ability wise I think I would but being one shy of being in the public I would not be comfortable or desire to be one. Public speaking is not for everybody. Especially speaking formally before a dignified audience such as involving royalties. But speaking casually would be my cup of tea.