I wear a full face Shoei w/bluetooth Chatterbox headset. On my RK I wear it with the shield up and sunglasses on loving the breeze listening to music. On my Duc I ride with the shield down. Different kind of riding focus.
We just replaced my wifes full face helmet with a modular design specific for installing a Chatterbox. I may pick one up for myself. I like the chin protection in the event something happens yet not have to remove it completely to hydrate or speak to someone at the gas station.