Changed socket permissions

In a production environment it is often necessary for groups to have write permissions over a socket.

For instance, I have a *ghost* user which runs the application behind an Nginx server running as *nginx* and group *www-data*. I want *ghost* to own the socket with read/write permissions but I also want *www-data* to have write access.

I can't think of a security downside to a 0774 configuration?