Funny piece! I think Mark Twain said it best "There ain’t no surer way to find out whether you like people or hate them than to travel with them."—Mark Twain
Being a travel photographer I am always on the road. On my team I have each of the personalities you mentioned it makes for great stories because there is never any balance.
Hopeful plug :)
http://steady70.blogspot.com/
Cheers
Steve
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