so yes - there is apparently user interest for such modification but that company resides in Peru and I'm not going to send the control board of my printer there for this patch, and I'm currently running a T2100, not the T3100.
Interesting. Perhaps in the fullness of time other options will become available. I think my approach going forward for now will be to carry on using my ip8750 for casual photo prints on photo media, and restrict use of the T2100 to mostly art prints on matt media. I seldom need or want to print photographs at A3 or above so this isn't a problem for me.
To satisfy my curiosity, I experimented with some printer test images on Ilford Pearl paper using the T2100, first with the semi-gloss paper setting, and then the enhanced matt setting. The semi-gloss profile without black ink was surprisingly passable. Not to repeat what has already been observed, but with careful selection of the image (without prominent areas of black detail) I think most users would be more than satisfied. Using the matt profile, I found that the black ink dried on the page within a few seconds of the print completing. As I was warned however, the gloss differential makes the prints unusable. I gave it a quick application of satin fixative, which made an improvement but does not present a sustainable solution.
Most surprisingly, I found that black and white prints using the semi-gloss profile (without black ink)
can come out looking great (to my eye). The same caveat applies, it needs to be a light image overall otherwise the blacks are crushed, and the tint becomes too apparent in areas of solid black. I experimentally mounted and framed a small 6"x6" b&w print, and the
very slight colour cast looks more like an artistic choice than a printing limitation.
I've just today got my hands on an i1 Studio so tonight I'll set about profiling with the paper I have loaded in the T2100 which is the inexpensive Xativa X-Press Matt Coated Premium Paper 230g/m². I'll also run it over the Ilford Pearl and see how it affects my earlier test prints!