HID works fine for scrog. Instead of putting its more powerful penetration to work to reach deep into the plant, you put its more powerful penetration to work creating larger buds above the screen. Which is the same thing, I guess.
[SNIP.... for brevity]
When someone asks me how they can get them most from there LED light I always tell them scrog.
The HID well it's really hot, and depending on your setup you may have to keep it at a distance which really cuts the intensity, so your dealing with alot of heat and waste.
The CFL well I do think this method will work, but not as good as LED's.
Again these are a little bit hotter than LED's
but have a much lower intensity and you must keep the bulbs very close to your canopy to insure you getting the proclaimed intensity.