I was once part of a small group of guys in Mesa AZ who played with the WMA but it was too inconsistent and faded away. I doubt anyone here could have known about us, though.
Look here:
http://jan.ucc.nau.edu/~wew/tsod.html This group is in northern AZ had a satellite in Mesa and also in West Phoenix. Many of the group were also SCA.
Like it or not, the SCA is still the best place to find WMA enthusiasts in AZ as far as I know. One might start there and find someone who knows someone...etc. I am not SCA and never have been. Not an endorsement or criticism BTW. Just an observation from personal experience.