David Lee Roth-Headset?

If anyone's checked out the recent Youtube videos or been lucky enough to go to a current Van Halen show you would've noticed one of the great rock frontmen Diamond dave Lee Roth not using the traditional mic but a headset.  Headset?  Far be it to go against one of the great rock starts who is a very intellectual person not just for the rock world, but a headset?  Think of it, when you think of headsets you think of this:

Not judging in this article because there are a lot of fans out there, but for one of the great rock bands to be aping a technique usually favoured by pop stars is worrying.  And it doesn't look natural