Dr. Feinman writes, "Back in the adipocyte (fat cell), the level of ketonemia (ketone bodies in the blood) is sensed by receptors. When the concentration is high, the ketone bodies turn off their own synthesis, that is, they inhibit lipolysis." "In addition to this direct effect, ketone bodies stimulate insulin from the pancreas. The effect is to feed back to inhibit lipolysis."
If he's got his biochemistry right (as I would assume), and interpreting things correctly, THE LAST THING A LOW-CARB DIETER SHOULD DO IS SUPPLEMENT MCT OR KETONE SALTS!
Do his observations come from starvation studies? Are they designed to slow lipolysis to a necessary minimum in times of famine?
Do they even apply, when adequate calories are consumed -- I would assume they still do, but if "common sense" were the rule in nutrition, then CICO would be "true" too.
In any case, this implies to me that AIMING for big numbers or dark colors on your ketone-measurement of choice is a mistake -- all you're doing by increasing ketone concentration with ketogenic substances is inhibit the breakdown of body fat for use in energy production. (Of course, this does not apply if your goal with ketosis is CNS therapy.)
Going back to Dr. Atkins' goal of "being in ketosis" -- the purpose is to show the weight-loss dieter that s/he IS burning body fat for fuel, and no longer running on glucose. Showing ketonuria (or ketonemia) is also a proxy that fasting insulin is within healthy bounds.
Anything beyond Atkins' ketone-goal is irrelevant ... IF your goal is fat-weight loss ... I think.