On a large scale, that would be time consuming. The best choices for speed would be a Planex style tool or a pole sander. Usually a quick pole sand scuff is enough to smooth off backrolled primer.
I like the ets/rts/dts for patch and skim sanding.
I sanded a ceiling for my painter brother with my planex last summer after prime. It was awesome, because of the smooth surface the sander really sucks to the ceiling and supports the entire weight of the sander, all I had to do was steer. Had 2000sqft of ceilings sanded in no time and it looked really good, left a really smooth surface for and the final paint job was perfect.