Yes, it might be less ink than is currently used, but 95%? I doubt it. You'd have to cost analyse as to whether the amount of ink still used plus the amount of cleaning fluid (at the cheaper price) including what then has to be purged was actually less than the cost of just using ink by itself. It might be, and it might still be cheaper after the cost of the system being put in place and so on.
Even systems that gate the PK/MK at the head use a measurable amount of ink to do a swap - multiply that across all channels and it certainly becomes more complex and less immediately attractive economically.
I'm sure Epson will be eager to review your findings.
You may doubt 95% savings, I don't... And I didn't say it would be easy, nothing ever seems to be. :-)
You know, I should lambaste you for your last arrogant (albeit based upon ignorance) comment, but I'll refrain from doing so. The fact is there have been many large corporations with 1000s of brilliant engineers who were taught how to make one of their own devices better or even function properly by an independent engineer or just an average Joe and I'm only speaking about my circle of family and friends. I'm sure the conversation went something like this back in the 70s "Yeah Bill, I'm sure IBM is eagerly waiting for you to sell them an operating system" that could have never happened, IBM was the largest computer company in the world and was being granted more patents than any other company.
A few other well known men...
Robert Kearns - You know who he is right?
Martin Eberhard and Elon Musk
The aforementioned four men tried to convince very large corporations that their creations were unique, they "failed". Obviously Ross Perot worked for IBM and Steve Wozniak worked for HP, Robert Kearns tried to sell his device (intermittent windshield wiper) to the "Big 3", but they didn't want to buy it, so they stole it, he successfully sued and "won"! (even though he won millions, does one ever win in American Courts?, another discussion) There are countless examples of this, so for you to say "I'm sure Epson will be eager to review your findings." tells me you have never designed or invented anything, for if you had you wouldn't make such a ridiculous comment. A good friend of mine (owner of a small $30 million co.) has saved a letter from Roger Smith (retired CEO of GM in the 1980s) thanking him for showing the engineers at GM how to make a piece of equipment work both companies had purchased, the engineers at GM couldn't get their 7 units working, my friends "Chief Engineer" (self taught, no college education) showed them how to make the machines work. I hope you get the point. It's possible Epson wouldn't welcome somebody with open arms who decided to devise a method of saving ink, but I bet when customers start purchasing other brands, they will wake up.... Don't be one of these people who believes all the best and brightest work for a Fortune 1000 company, they don't and there's a reason why some do and some don't..... Think about it..
I don't know how much Jeff Schewe is told by Epson regarding future products, but if Epson is like every other large corporation they don't tell "consultants" much until the date gets close. I have no idea what Jeff does or doesn't know and that wouldn't discourage me from tearing one apart.