I'd be all for that. I don't know how yours is, but my VX is too loud inside at highway speeds already. Makes it hard to yap on the phone when I'm driving 80. Don't need a loud exhaust exacerbating the situation. Can't afford the OEM muffler so when mine finally craps out I'll be looking for the quietest aftermarket unit I can find.
Here's another idea for you guys going to Moab: I know somebody has posted a collection of Youtube videos of different VX exhaust notes on here but I think they were done with different recording devices, some closer to the exhaust than others, etc. How about if we get scientific about it. At Moab there will be numerous types of VX exhausts all in one place. Use the same recording device - preferably a camera with a decent microphone not a cell phone - all from the same distance away from the exhaust tip and at a 45 degree angle so pressure waves don't overload the microphone. Get idle, blipping throttle, and steady 3000 rpm for each vehicle. That way one could truly compare sound levels, quality, etc.