Digital BW, The Print

I wonder if anyone has any experience with the Advanced B/W driver, with
respect to color management in PS? I am testing my R2400 and am trying to
resolve a statement by Jeff Schewe in his excellent article in PhotoshopNews:

http://photoshopnews.com/2005/05/16/epson-r2400-and-ultrachrome-k3-ink-report/

where he states:

"Printing out of Photoshop CS2, I used the Print with Preview dialog to set up
the Photoshop to Epson driver hand off. Since the Advanced B&W Mode operates
completely outside of normal color management parameters, in Photoshop you
must turn off any color management".

I wonder if I am doing something wrong. I am printing a B/W strip posterized
to 31 segments. The first segment is 100% black, the second 97% black, and so
on.

Prior to reading Jeff's article, I did my tests with Color Management ON in PS
and as I have always done with color; and the results with the Advanced B/W
driver are excellent, except for some difficulty in differentiating the 100
and 97% (they are both black, even though I can see a difference on my
monitor; with a curve in PS, I can slightly open up the 100-97%).

There is very little change in the shadows using Shadow Tonality in the
Advanced B/W driver, from -25 to +25.

After reading Jeff's article, I turned off CM, passing control to the Advanced
B/W driver. The strips became all black for many more segments. I could not
open them up using the driver.

Am I missing something from Jeff's article? It seems that CM ON in PS still
gives much better results  than I can achieve by the driver alone.

Is there a better way to open up the deep blacks?

Any comments will be greatly appreciated.

Thanks,

Sonny