I'd do 'em, but the pain in the arse about reviewing stuff is that you always manage to piss someone off. You pick on some song that you're sure everyone hates, only to get a bunch of people saying "hey that's a great song". And they're always wrong.
The thing about video reviews is having the confidence to get in front of the camera to hundreds+ of people who dont know you. Video reviews are also more subject to hate whereas written review, not as much. Video reviews are better overall thou. I've started doing them for my reviews on amazon as I'm able to get more points across then what I could in a written review.