Back to the first pic of the EMT installation, I see no offsets to bring the EMT snug to the wall and I see no strapping at all. Using the proper anchors and strapping (within 12" of each junction/box fitting), you could construct this exact installation and be able to virtually stand on it without breaking it off the wall, unless the drywall gave out first. Over strapping and extra anchors is perfectly legal, BTW.
(I may be exaxerating with the "standing" on it comment, but you see my point...)
