Your back rest sounds interesting. If you have any information I'd like to see it. Saw a picture of a new concave back rest pad from Triumph in last months Torque Magazine. Again, as usual, Triumph puts out pictures and assigns a part number to the item and then tells you it's not available yet. That's happened to me with the chrome levers, chrome water pump and now the back rest pad!
This AussieBiker pallion is great. Lots of cushion and my female friend (not wife...... I did that twice) loves it because she can now see over my shoulder instead of just watching to the side.