My pianist and I both play at two churches. At 8:30, we play at my home church. At 11:00 we play at his home church. My church pays him. His church pays me. It is highly unlikely that either of us would ever become a member of the other's church because of differences in worship styles and political leanings. We both know and respect a lot of people at each other's churches, but are each more at home with our respective home churches.
Peace,
James