CES was also very helpful when I contacted them at the start of my quest for a better exhaust. I decided that I would pursue Reband instead. They were also very helpful and eventually found a R3T to try the pipe on and reported back that the Reband would not work on the tourer. Haven't heard back about the exact reason but I suspect that the angle of up sweep on the silencer is too much for it to fit under the bag and support. If I had to guess from looking at all the pictures of the CES system that I could find, I suspect that will also be the case with their pipe.
If you take a good look at our stock setup with the bags removed, the axle nut is just about at the center line of the muffler. Both the Reband and CES systems look a lot higher up and angled to me.
I sure wouldn't order one unless they could show me a picture of one installed on a tourer and that might take them a while to provide. According to Olivia at Reband the R3T is a pretty rare animal down under. Reckon the place is pretty much infested with Roadsters though!