QTR-Quadtone RIP

Hi Everybody Im a newbie in here, 
Sorry if my english is not very good, im also have question about QTR Create ICC/ICC RGB. I 
love this feature because finally im able to Soft Proofing Epson ABW.
If im not wrong (please correct me if im wrong), the function of QTR create ICC is to Linearize 
data and then make icc Profile based on linearize data. How if i want to make ICC profile 
without Linearized the data , so i can softproofing Before and after Linearize result in 
Photoshop? if it not posibble, There is another method for doing it?

Thanks Everybody,