Sketchup doesn't have the best metal textures but you can get an idea of the finished look, the metal panels and brackets will be polished to a mirror-like finish, so will the bar if it can be.
Running along the bottom you can see the two steel rails the bar bolts into. This design will minimise the stress put on the back portion of the pad and should make the bar incredibly solid and strong at the same time.
Here's a picture of the bar and rails:
As you can see the bar will be totally removable, it passes through 2 holes in the pad then the rails are bolted onto the bottom (this will either be with 1 or 2 bolts on each side, not sure yet), the rails are then bolted to the bottom of the pad.
Here's a picture of the arrow well. it's not the current design but it's the same one as the prototype. The only thing missing are the corner pads to prevent the arrow over bending.
And for historical purposes here's the first models I made for the very original design.
Please let me know if you want to see anything in particular. I know I'm not the best at this blogging thing so I'm sure I've missed out lots, any feedback is greatly appreciated =D