The last couple attempts at a provider-only event resulted in guys showing up despite the organizers' stated intentions and wishes.  The reality is that, in this community, there are certain guys who will either be there, or make sure the ladies they're affiliated with aren't there.  Some times it's a bit pimpish.  Worse yet, some of the ladies can't seem to imagine attending something like this without bringing one of their ATF clients (or their employer).  Can't wait to see who shows up!