Digital BW, The Print

All,

I am currently using PS to print with a 2200 with a custom profile 
for HPR. I can achieve what I like from a tonal standpoint using PS 
duotones and quadtones, but have a concern due to slight metamerism 
and possible longevity issues using the Epson drivers. My question 
is, can curves be generated for QTR that will allow for a Duotone 
look? Right now I have a print that matches what I remember Agfa 
Record Rapid + Selenium toning looking like and am very pleased with 
the results. 

Changing from the UC inks isn't a short term solution as I still need 
to do some color work.

Thanks in advande for any comments / opinions.

Regards

Martin