Digital BW, The Print

I've got a new Epson 1800. After making some custom printer profiles, 
I'm getting the excellent color results others have mentioned (though 
even the "premium" Epson profiles did not produce good color matches). 
I want to do a small amount of B&W printing also, if that is possible 
with this printer. I know the prints from the OEM Epson inks are cool 
in tone. Can anyone relate their experience using QuadTone RIP with 
the Epson Ultrachrome inks and the 1800 printer? 

A related question RE: the Epson 1800 and Ultrachrome inks - Has 
anyone made a warm quadtone image and blended that with the original 
B&W image to successfully produce a neutral or warm-toned B&W print?

Bill Hansen