Charismatic leaders in forums, Are they same to work with?

We love to hear charismatic leaders speak in forums. They inspire through articles, their public personalities are magnetic!

Are they 'the same' person to work with? Not all I guess! A couple of times I went by my one-off personal interactions and chose to work with some publicly inspiring personalities. 

I think leaders or anybody for that matter don't match their public behaviors in private! It's not easy to be somebody else all the time. People who worked with me can vouch for that :)

The real "Self' has to eventually appear, isn't it? We used to see benevolent behavior from that boss except when he was one to one with us. After giving a very motivating Townhall speech, answering the irritating questions with a dignity he would turn up to next meeting with utter disdain to his reportees.

He used to bark at his secretary, driver, office boy as though they were all stress relievers to his recent townhall. As much as we hail the leaders in public for their designations and influential roles they play, we only remember them for how they behave in private, don't we?

After all, whenever somebody asks us how is that leader in private, we end up saying, nice guy or jerk! The private experience of the leader spreads faster than what the publicly portrayed image!