Nice article. I happily incident meter as well and you've mostly covered it.
With flash, I also use the incident meter to estimate the light in other parts of the scene in addition to the face. Such as the background or hands, to make sure I've got things lit the way my eyes see it. We all too often replace the incident flash meter with a DSLR these days.
Oh Yeah, I agree, it is a perfect tool for setting up flash scenes.
I also really believe that flash and other forms of artificial lighting controls are ignored by way too many people.
Mark Barendt, Ignacio, CO
"We do not see things the way they are. We see things the way we are." Ana´s Nin