Its a criminal offense not to on an SV as you have to hear that V-twin rumble!
Yeah, not going to go for a "sports can" or whatever, most bikes are loud enough as it is, and what's the point in drawing attention to yourself?
I waited a year before I fitted one to mine and wished I had done it sooner!
Got a Remus Powercone on the Zed - it has a removable baffle but I have never touched it as its plenty loud enough anyway...
Remember - loud pipes save lives!