That thing on the upper right hand side of the camera looking from the shooter's position is a Thumbie from Steve Barnett. That frees up the hot shoe flash to mount an external viewfinder, like in this case, and from time to time, even to mount a flash unit to provide fill in flash.
The strap/cord is form Artisan & Artist - here is an excerpt of their description:
Using skills passed down for generations, revered Japanese artisans still produced cords made from silk that have great strength and durability. The Japanese have traditionally used this type of cord for such demanding vital applications as securing battle armor and Samurai sword sheathes. Artisan & Artist took this ancient craft and applied it to modern camera straps. Luxurious in its feel and stylish in its appearance, the woven silk cord camera strap feels as good as it looks. Since itís made from silk, the natural material is comfortable in any weather because it allows the skin to breathe through it. The special weave using so many strands of silk takes what is thought of as the most delicate material and creates a cord is virtually unbreakable and very durable. The ends of the cord strap are leather-clad and sewn together using the strongest of thread and technique to secure the attachment rings. This strength and durability means never having to worry about the camera falling because of frayed ends.
I don't have any relation whatsoever to any manufactureres listed here.