Digital BW, The Print

hi, 

I've used both Epson's UC inks and a brief stint of trying MIS UT7 inks 
for my 2200.  I was wondering if anyone has used the MIS UT7 Eboni ink 
in lieu of Epsons Matte Black (mk) but still used the rest of the UC 
inks?  

Is there an advantage to doing this?