Hello again.
You said a lot of things in this post and drew some conclusions that are not correct. I'll see what I can do to straighten this matter out for you - and hopefully for the OP:
The Duty Treatment is a ferritic nitro-carburizing process that is, in fact, a form of rust. It's similar chemically to HardHat and Melonite. It provides a blackened surface that is amongst the toughest in the industry. Thousands of draws from Kydex, intensive shooting and even abrasions that would scratch other surfaces will have no negative affect on the DT.
In order to maintain the attractive look of the finish one shouldn't use any chemical that would de-grease it - for example, a cleaner that contains Toluene, brake cleaner and GunScrubber come to mind. Using these solvents/cleaners/lubes should not cause the gun to seize - they will discolor the finish - cosmetically. Different issues may obtain if these chemicals are used on the rails. DW Rail Lube, EB lube, Mobil1, Kroil, Ballistol, FireClean, Hoppe's No. 9, FP-10 and many, many others 'play well' with the Duty Treatment finish. I happen to use FireClean exclusively with great results both as a cleaner and lube. BTW, many chemicals that do not 'play well' with DT - would also remove the bluing from a carbon steel gun.
I hope this clears up some of what appears to be 'silliness' about this issue. I have a V-Bob in Duty Treat and can tell you it's as hard as nails and the best and toughest and most durable finish I've ever encountered in almost 40 years of shooting. After well over 1K rounds through it mine looks as new!