Lou,
I am an Alaska guy, but will be in Arizona in February trying to shed the Alaska Winter Syndrom (standing around shivering) for that month. I am driving up to Mesa for the Desert Woodturners Roundup 6-7-8 of February. The current plans are posted as having a penturners gathering on Friday the 6th. My understanding is that the organizers are working with IAP members and other penturners to make it happen. Sounds like a great place for a new chapter to be visible.
The American Association of Woodturners Chapter in the Phoenix area (Arizona Woodturners Association) is hosting the gathering, and my read of the AAW bylaws suggests having a sub-chapter of IAP penturners is a good move too.
Here in Juneau, there are only a few penturners and we do talk about it a our local AAW chapter meetings on occasion -- but most are bowl turners and the like.