The lighting you use - as any
real professional will tell you - depends upon what you are trying to do and where.
I worked with most of the top advertising pros in the early 80's on stuff like this:
http://www.alastairmcintosh.com/images/bensons.htm
This particular little AD&D award winner (photographer Ed White) was lit in a very interesting way.
http://www.alastairmcintosh.com/images/bensons_files/image006.jpg
If any of the people holding forth on here can tell me what the main light source for this shot was then I might believe that they actually know what they are talking about.
But all I see at the moment is posturing and posing coming from most contributors (and one in particular).
What neither 'side' in this 'debate' can see is that there is no real argument at all. Just people polishing their egos.
I have a Swiss Army knife. It is a useful thing with many features. I could use it to make an ornately carved chair if I could be bothered. But I could do the same job a lot quicker with the proper tools.
Lighting is pretty much the same. You use what you need to use to get the effects you want. Sometimes your choice is limited by budget. Sometimes the constraints of the shot dictate. Sometimes you have to work with what you've got.
It's certainly easier if you have
exactly the right piece of kit, but there are times when the right piece of kit doesn't exist, or it's got lost or stolen or broken, and you have to do the best you can with what you do have.
No one wants to hear excuses - they just want the shots by the deadline.