Nice article... I agree with most of what Norman Jean Roy says.
Regarding you question on the lights. Those are Mole Richardson 10K also caller Tener Mole
by most gaffers. They produce beautiful light.
I have many old Mole Richardsons. 2K and 10K. I also like to use the 10K with a bulb adapter putting a 2k bulb into the
Tener. However keep in mind that the bulb you put into these types of lights makes a significant difference.
Top lamp is Osram
Bottom lamp is Ushio
The Osram has a denser filament and produces much cleaner light behind a fresnel lens.
The Osram has two rows of filaments that are offset so as to produce a nice solid source.
The Ushio on the other hand has far more separation in the filament so it appears as multiple light sources.
Through the fresnel lens the split up Ushio fillament results in banding on the shadows.
If I ever use these type of lights that are not mine I have my assistant open each unit up and check the bulb.
If the filaments are not compact I ask for other bulbs.
Elinchrom also made a great modeler called the SL35 Fresnel spot. It produces great light to.
I have also modified some ADB Fresnel TV spots so that I can put a Flash head in them.