Digital BW, The Print

Jerry, thanks for your suggestions in such a timely manner.  The only 
question that I would like to ask again is why it seems that very 
few, if anyone, print b&w photos using the 6 color inkset.  Out of 
close to 100 different images printed within the last 2 weeks on the 
1280, only 4 had a bit of a crosscurve of magenta in the highlights 
with green in the shadow, on somerset enhanced paper.  There was no 
problem on the LPM or EAM.  I would like to try the longer lasting 
inks (MIS).  If I could even come close to how the prints look like 
with the epson dyes, I would be happy.  Among the color prints that I 
do, they are from Polaroid Image Transfers of b&w imagery that is 
filtered, ending up in a sepia overall tone with hints of dark green 
in the shadows with a slightly salmon color in the highlights.  They 
have a beautiful tonal range, but the biggest size I can do as 
originals is 8x10 polaroid film, the 13x19 enlargements of these 
images look 3D, and really beautiful, especially on the somerset 
enhanced textured paper, as the originals are on Arches paper.    I 
would love to hear about some folks personal experiences printing b&w 
images with the MIS color inkset. I would guess that there would be 
the occasional crosscurve on some papers, but probably corrected on a 
different paper.
Thanks again to all.
David