Unless Blender can be accessed from an "outside" Python environment, the answer is "no way." Blender Python scripts make use of Blender objects and methods, Poser Python scripts make use of Poser objects and methods. I've tried accessing the Poser objects and methods from a standalone Python installation - no luck. Poser Python only works with the built-in Python environment. I haven't tried accessing Blender objects from a standalone Python installation. If that works, it's possible to run Blender scripts inside the Poser Python environment, unchanged except for an import statement. The only workaround I can think of is setting up communication between Poser and Blender over a TCP/IP socket, exchanging commands. tromnek's PRPC system (PRPC=Poser Remote Procedure Call) works that way. It should be possible to access the PRPC daemon from Blender Python, which gives you the other way around - accessing Poser from Blender.

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