Is A Live Concert Stereo Or Mono

Someone the other day said to me by e-mail when I asked if the Mono LP were better than the Stereo LP and he answered have you ever hear a live concert , they are in MONO.

I wasn't sure if he was kidding or not.

what is your take on this

Oh yeah.. he prefered MONO..
I'm still trying to figure this one out, will have to get both a stereo and mono copy of the same LP and see..
comments welcome on this 2 part deal