"This was suggested, in another thread, so that displaced areas don't poke through clothes.  Mask the displacement so it isn't applied on skin beneath clothing."

if your displacement is 'puffing up' your figure then you need to fine tune your displacement map export settings from your software, and then your displacement map nodes/strength settings in poser.

since youre referring to a figure/clothing pokethrough im assuming youre talking about some sortof full body displacement map - which should just be fine surface details -- if applied properly your figure shouldnt 'puff up' :)