Digital BW, The Print

ok now i have more information. sepia in the dark room is a total 
different process(chemicals) than black/white(chemicals).  Also if a 
photographer wanted a warm or cool effect on their image the will do 
it that time with filers, lenes, and settings. So I am going with 
piezo ink but how will that work out if a photgrapher shot a 
cool/black/white image and i am printing it for them on netural ink? 
Is that where the RIP(studioprint) color management(gretag 
spectrophotometer) and paper come into play? If so why does inkpress 
sell paper that has different tones(warm, cool)?