Definitely ought to have the pipe ceramic coated on the inside (especially the header section). It will protect the SS and if you ever get oil on them, it will help avoid turning them blue.
I just got my set too, and when I spoke with Chris, he indicated the spring joints are very solid, easy to section the header for oil changes using them, and make maintenance a lot easier.
I have a 2 piece exhaust on another bike using springs and they work great.
Very nice bike!