Stevie,
For those of us that boondock most of the time and don't always have access to 110 VAC shore power, the 110 VAC to 12 VDC converter isn't the answer for us, but it is a good idea for those that do have full time 110 VAC power. We like to use our 12 Volts battery system for as many things as we can, so I installed a small 12 VDC to 110VAC inverter to run our 110 VAC TV's, DVD and video game...etc. While I have a Honda Generator, we only run it for a few hours a day to keep the main batteries charged.
It would be really nice to have a few factory installed 12 VDC recepticles in every Heartland / Sundance. Ideally there would be three: one in the storage compartment; one in or around the entertainment center; and one in or around the Bedroom TV cabinet. Even if it is offered as an option, I would have been more than willing to pay extra for a few 12 VDC recepticles in my coach.