Brett Nordquist likes IT Conversations better than the Scobleshow, although his reasons have little to do with content and much to do with format. Simply put, video podcasts compete with a different segment of the 'Net for user's time that audio podcasts do.
Brett comments that when he's at his computer watching video its far more likely to be YouTube than it is a video podcast on technology 'ala the Scobleshow. Audio podcasts compete with radio, music, or, in some cases, non-consumption (i.e. the fill time that the listener wouldn't be listening to anything else). This doesn't change with better video iPods.