I've been looking at how Instancing could be applied in OctaneRender for Poser. It's going to be as simple as changing the "mesh" type to "scatter" for a Poser scene element.
Once it's a "scatter" node, select a pre-calculated transformation matrix (csv) file, or generate a new one. You specify the Poser prop that the instances will be randomly placed on, and specify some density and randomising paramters. Calculating 1000 instances only takes a few seconds.