You know, after reading about this in Hot rod, looking at the pictures, and trying to get into some of the details on moparts, I've come to the conclusion that the whole roller deal is still not the cheapest or easiest way to do a paint job and at this point is more of a "lookit what I did" endevour.
Case in point, new professional series hvlp gun from harbor freight is $40, single stage PPG industrial urethane is $40 a gallon, epoxy primer is $50. Add in a weekend worth of prep, an day spraying, and your done. No sanding, no multiple coats, no roller, no hype. You spray primer, your spray color, your done.