Digital BW, The Print

I am confused. I know I can use the Eboni black in place of MK for
both color (using the Epson driver) and B&W (using QTR)in the 2200.
Can you use MIS UT7 LK-UPK in place of Epson PK black for glossy
papers? Also can you use MIS UT7-LK-Pos to replace Epson LK black for
all printing? Thanks, Chuck