Digital BW, The Print

Recently it was noted that if we coiuld print grayscale images with 
RGB inks without color crossover and metamerism life would be grand.

Well I was wondering. Epson claims that their new lightfast inks will 
last for at least 25 years. They recently intriduced these inks for 
the 1280, 7000, 10000 etc. These inks have little or no metamerism as 
they are dyes. The 25 year life seems somewhat reasonable for certain 
circumstances and the color gamut is very nice.

Jerry Olsen has mentioned getting interesting results with profiled 
MIS inks and duotones. I was wondering if anyone else has been able 
to use the OEM inkd for the Epson 1280 and get a true neutral 
grayscale without color crossover in the highlights/midtones or 
shadows?

Mike