Compared to the intro, the volume seems muted. I would suggest using a lapel mic to help from keeping you sounding distant. As for the vest, how is better than just layering up? I'm a snowboarder, and that's how I generally stay warm up on the mountain. Do they also have them with heated sleeved?
The vest is much warmer than layering. It's not just conserving your body heat, it's creating heat. You can feel it radiating through you. Very, very nice. I saw a couple of jackets with the heated sleeves after I had gotten the vest, though vests seem to be much more common. As for the volume, that is something that I have to work on.