I concur. Clean, functional design that complements the lines of your RE. Get it powder-coated Green and you have a winner. I'm powder-coating mine ($50, their minimum) Blue Streak (I luv the name, especially for a RE). Its just an aluminum U that bolts to my C-Bow brackets, much simpler design than yours. I'll publish pictures when it's done.
I'm using these reflective, elastic ROK straps as tie-downs. They pack small so you carry several and don't have those huge bungee cord hooks that waste space. Other colors available (do you like Pink?).