Good to hear, sounds similar to my Janspeed system but a little more throaty. Thought about this myself but didn't want to hear anything on a motorway run etc.
Do you have center boxes on that? I have just standard rear boxes, infact it was a brand new exhaust that I had fitted at the same time. (along with a new rad and aux belt... old girl has been demanding this month)
I will take a better video when I get 5 minutes, joys of being bed ridden with flu/plague for the last few days!