Digital BW, The Print

Hi, all:

I haven't been doing much black and white printing the last 2 years 
or so.  I have been busy with work, and with our baby.  I am getting 
back into it and need to order some new inks.  I'm still using an 
Epson 1200, which still prints great (when it's not clogged) with the 
original VM inkset.  I'm tempted to use the Eboni black instead of 
the VM black when I reorder.  Should the same curves still work?  Any 
other reasons why I should just stay with the original blacks?  As I 
read the MIS website, I don't need to flush out the old VM black 
because it's pure pigment and there should be no incompatibility with 
Eboni -- correct?  Thanks for your help.  Howard