Digital BW, The Print

Has anyone read Michael Reichmann's review of the Piezography system 
on his Luminous Landscape web site? (http://www.luminous-
landscape.com/piezo.htm) I'd be interested in hearing your response 
to his conclusions -- particularly with regard to the comparison of 
prints using the Piezo system with those made using Epson color inks 
(and drivers) printing duotone, tritone, etc.