Ernst, First, are you from Holland?
I agree that a printer with 3 black and grey inks are preferable. Though since I am really just a hobby photographer I wanted to start out with something simple, and the dye inks in my printer are great for my type of photography, only one black cartridge is what I have to play with. However this small color space with a tiny AB values sounds pretty awesome given the simpler LUT it would achieve?
I found a way on the internet to print with just the black ink, choosing plain paper, not selecting borderless and then select greyscale within the driver. The outcome is great actually, but I can't tone it if I wanted to.
I was thinking if I made this profile in Argyll, I could create a relative neutral grey using all the inks, and slightly tone it a bit warmer, and still have a nice even tone throughout the print.
The compensation I made in Argyll regarding the OBA's was to see if it made any real difference back home. But with too much work and a sick kid at home, I haven't had the time.
The use of double profiling you talked about, If you meant selecting a color space on you image, say this small one you mentioned, and then having the printers ABW or similar selected, and still use a profile in PS print dialog, it can be done, but I think you would have to manually create and modify this print dialog profile.
I have a IPDS cut sheet printer, with CM turned on. The software they use to manage their afp data is using fogra39, and in our AFP controller we have selected a fogra39 profile as the assumed profile used on every received job. However, there is also a output profile, or actually 8 of them, All is created by the manufacturer, and is called 1A_ME_5000_XP or something similar, and is to simulate either Xerox, Mondi or IBM paper, as well as a maximum Ink amount from 200-300%.
I wanted to profile our printers, and the manufacturer informed me that this was pretty cumbersome, but if I wanted, I would create an output profile, creating it manually, since there is no way to turn of the the color management and see how the test patches would look entirely without CM in this workflow. This is doable, and I have tried, but everytime something turns out wrong.. One time the blues were way off, the other pure black always came out CMY instead. OT I know, but I think you may have to come up with something similar.
Kind Regards!
Marcus!