After listening again to WVIP HD2, I found out that it is being leased 24/7 by Wee Radio, a local Caribbean broadcaster. There are some time slots that have DJ's, including some veteran NY West Indian radio guys, such as Spiceman, and Gil Bailey. They also broadcast during certain hours on WNYZ 87.7.
Perhaps ethnic broadcasts will become one of the main uses in urban areas for HD radio multicast channels.
They also stream online. Here is their website address: http://weeradioonline.com/