Digital BW, The Print

I am finally getting my head around colour management which is a real 
bonus as I do most of my work in mono!

I use an Epson 1270 loaded with CIS Ultratone Mono Inks printing onto 
EAM and Permajet Glossy and Matte Papers. I print from both PS7 and 
QImage but prefer the latter. However I do not use the generic Epson 
1270 profile in either because I find it lays down too much in the 
shadows (on a wedge chart blocks from 85% upwards!).

I know that you can profile colour charts using a Gretag Macbeth to 
give a comparison between what the GM equipment thinks the colours 
should be and what the printer has printed them as and provide a frig 
factor to bring the printer inline with the GM colour range. 

The question I am asking is - How do you provide a mono solution for 
ink/paper profiling because I do not have access to a colour 
printout? Would it be as simple as converting the GM chart to mono 
and then scanning it in as all the GM kit is looking for is a 
difference rather than an absolute number?

Thanks for your help in advance.

Gareth