Picked up my bike this last weekend from the dealer, where's it been hibernating for the winter and having some work done, including installation of a Two-Brothers slip-on.
Wearing a full-face helmet, I did not find the exhaust overly loud, although it is by no means unintrusive. I wasn't pulling the engine hard though, and I have the sense that I'll end up putting in an optional baffle, just to keep my neighbors happy.
It's great to be rid of the original bazooka, with it's weight, size, and lack of sound. The Brothers looks real good in the black carbon.