Unfortunately, my knowledge of Poser is very limited. I don't have the software to reference, and I'm not sure how it handles "hair" currently. The Luxrender Wiki seems to indicate that it does include a strand primitive, which it says is efficient for large collections of thin strands (hair or fur), and produces them specifically at rendertime, to save resources. It can render as solid, adaptive, and "ribbon" mode. So I assume that this is something Reality supports in order to translate the Poser hair to Luxrender? You'd have to ask in the Reality forum for a definitive answer. The results of the Luxrender translation of hair and fur, in render, does appear impressive from what I've seen by searching.

http://www.luxrender.net/wiki/Hair_and_Fur

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