I would suggest you find a clothing item in Poser that just uses shaders instead of texture maps and then import it without the shader tree, see what you get...
IMO, using the shader tree is a must when importing from Poser, for me I can honestly say I've never had the problems these other posters have stated and have never had to adjust anything as far as I can remember.
But hey, it's up to you how you work, nobody can tell you how to do it, do what suits you best..

Injustice will be avenged.
Cofiwch Dryweryn.