Digital BW, The Print

On my 2400 I have been using VFA and HPR.  In the Epson driver I have 
been selecting "Enhanced Matte" as the paper type for HPR.

I am now testing a few other papers: HM Condor BW, Arches Smooth, and 
RR Dourian Art.  I am wondering about paper type selection in general 
and in specific for these papers.  HM seems to recommend "Watercolor" 
for the Condor; RR "EEM" for the Dourian; and Arches "Smooth Fine 
Art" (there is an "Ultra Smooth Fine Art" in the 
driver), "watercolor," or "Photobase."  I know others are using these 
papers on the 2400/4800 and wonder what settings they've settled on.

More generally, am I correct that the issue with paper type selection 
is the ink load?  Are other things being controlled with the paper 
type selection (other than forcing you to put it in one load slot or 
another)?  With regard to ink load, does the specific paper coating 
make the difference or is it more a matter of texture?

I will be printing targets for QTR Create ICC so tonal scale 
differences are somewhat less important in paper type selection, or 
so I think.

Many thanks,
Walt