Digital BW, The Print

Keep in mind when switching to a pigment ink set, things change dramatically.  Even with a professional profile, I don't believe that you will ever get a print to look like that of a dye ink set.  I switched from epson oem carts to a CIS with MIS pigs, color inkset, and never got what I consider to be a satisfying b&w print.  Either abrupt tonal gradations of posterization, there was always a problem.  I wasted a couple hundred sheets of paper trying to make it work, but was unable.  I switched back to MIS color dyes with the CIS, and have been printing beautiful b&w images without any disapointment.
So I'm just warning you. once you go to pigs, everything changes.  As CDTobie said to me when he made my profiles, some pigment ink & paper combinations can only do so much, don't expect it to look like the oem carts with dyes.
Just my 2 cents.
David