Excellent write up (as usual) Bill.
On the other hand, with the exception of street photography, I often employ either small flash, studio flash or reflectors in my work for the simple reason that it improves the light on the subject and makes the image stand out from the rest. While it is a pain to cart along the gear, I like the result of using on-location (i.e. not in the studio) flash.
The natural light and light from the flash are an important elements in the first three images.
1. Bounced Small Flash
2, Location shoot with studio light to fill in back-light setting
3. Studio light out doors at home - underexpose the background by 2 - 3 stops and properly expose the subject
Of course, I also use studio flash on location indoors - no natural light component at all in these two shots
4. At the recording studio
5. Model shoot in abandoned paper mill