has anybody managed to get the DSON/Genesis in Poser Pro 2014 to behave itself and use it as effectively as you would expect a poser native or older Daz figure to work?

As effectively as a native Poser figure or older DAZ figure?  No.  Absolutely not.

If you keep your scenes light, I think the figure is manageable to some degree.

You could probably make it "closer to effective" if you export it from DAZ Studio as a cr2 by baking it into a native file.  There are multiple things missing from the export and code blocks that need to be removed or DSON for Poser wants to "pick it up" when you load it.  You also loose some of it's native "features" going this route.

I use your script to clean up exported CR2s. Works like a dream. I use the same method with clothing, except dial in the morphs I want before export from DS. No UI slowdown. No DSON importer. Just native poser figures. I can load far more of them into a scene than I can of V4 because they start with 22k polys. Change the skinning method on the human figures to Poser unimesh and increase subdivision, and they're great. HD morphs show up at subdivision level 3. HD morphs are not as good as they are using Daz's subdivision method, but they work relatively well. Well enough, in any case, that I think they're worth adding to the figure. (and I have found NO substitute for Zev0's fantastic aging morphs). Your script basically just changed my entire workflow with Genesis/Genesis 2. It's a bit more work up front, but smooth as silk after. Thank you!!

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PoserPro 2014, PS CS5.5 Ext, Nikon D300. Win 8, i7-4770 @ 3.4 GHz, AMD Radeon 8570, 12 GB RAM.