I think it would be hard to get the look he wants in the Poser Hair Room.  The image he posted is slicked back.  Like an FBI agent or something. You won't get that look with strand hair. 

Some of the older Poser hair models might be closer to what he wants.  One of the old "plastic" hairs with a new texture, maybe?

FWIW, the Guillaume Hair does work in Poser without DSON, but it's a huge model.  Expect your computer to slow to a crawl.  Fibermesh hair looks great, but takes forever to load and render.