Digital BW, The Print

I'd like to ask that anyone who has a 4000 print a B&W image with a "normal" 
range of tonal values and check for neutrality and metamerism.  I ask this b/c I 
have a 4000 and have printed one B&W image that to me looks neutral and 
(more surprisingly) seems to show little to no color shifting when viewed in 
different light.  The print was a grayscale RGB file (converted using the 
Convert to B&W Pro plug-in) on Epson Enhanced Matte, printed at 1440dpi, 
using "printer color management" in the Photoshop driver and "color controls" 
in the Epson driver.  However, the image I printed was not really 
representative of a normal B&W, in my opinion -- it's a backlit image of a tree 
against the sky, so it had lots of stark blacks and white whites, with just a bit of 
midtone values and gradation in the sky.  So, I'll be printing another image as 
a better test (like something with a wide range of tonal values -- a landscape 
of street shot).  I'd like others to post their experiences w. B&W on the 4000 as 
well -- I find it hard to believe that B&W has been significantly improved 
unless there were serious tweaks to the driver that I don't know about, and am 
assuming, as I mentioned above, that the nature of this particular image is 
why there was little metamerism.  (Or perhaps Enhanced Matte shows less 
color shifting for some reason?  I'll try the next print on a different paper).