Digital BW, The Print

I've been using the VM Roark inkset in an Epson 1200 (Mac OS 9) for 
about 9 months now.  Great setup, works like a charm (knock on 
wood).  I finally need to start replacing the ink (I don't print that 
much black and white; mostly color) and am evaluating switching to 
the VM Sepia inkset, the reason being that I print 90% of my images 
using the MW curve.  I'd like more variations on the sepia tone.  
Does the VM Sepia inkset work with the same curves?  Thanks, Howard