When I started on this crusade I talked to CMHA reps in Alberta and head office in Ottawa and not one was repulsed by the idea of gun owners working to reduce the stigma of mental illness, prevent suicide or make the public more aware of mental health services.
In truth they made it very clear that they would not form a direct association with gun owners, or any other org for that matter. But they would invite us to provide them with funds to develop specific programs of benefit to us.