Can I run my iPod off of the USB and then Bluetooth a headset to the iPod just to stream audio? I'm not so interested in making phone calls while riding, but I like to use earbuds on long highway runs to cut down on wind noise. Don't really want to add the comm plug just to get the option of a headset when I don't intend to use voice. I can always default back to tossing my player in my pocket, but I kind of like having the controls on the bar and not having to fumble for them.