This should probably be moved to the NCOWS open forum since the question is directed to NCOWS. There people who are more knowledgeable regarding the requirements would be apt to respond.
My first thought is that since NCOWS is based on Historical things it wouldn't be appropriate, however most of the "gunfights" I have taken part in and seen are not necessarily based on actual fights. Perhaps if the show was done in historically correct clothing and gear it might be the right venue.
Will Ketchum