Hey again gents (and ladies?),
Quick feedback from my experience using powerful flash heads to stimulate the reversal process: it makes a huge difference. Without really having numbers to relate to the above information, or surviving visual (scannable) results to give you, I noticed a massive increase in overal tonal range and contrast using studio strobes to hit the negative image with.
The reason I don't have anything to show you to prove it is a result of my recycling of fairly old fixer in my portable paper-picture kit. Having long since dissolved even the aluminium off of the bottle seal, and smelling strongly of ammonia, the fixer somehow bleached the developed positive images from very nice looking black and white to a creme and rusty brown. No idea what was going on there, but sadly the great reversal results were lost.
Anyone else try out my approach yet? Particularly with a larger format camera?