I think the point that's being missed is that with Carrara 6 Pro YOU DON'T NEED POSER! For anything!
You can load your existing Runtimes right into C6's content browser and start working right away. You can pose, add MAT poses, INJ/REM poses, conform clothing, etc.-right in Carrara. And it's much faster than Poser. C6's OpenGL is hugely improved over C5, so you can create animations and watch them back in real time before you render.
There's no point in worrying about Poser's dynamic hair either because C6's dynamic hair is just awesome. It simulates wickedly fast and the tool set for styling the hair is great. Plus you can use the dynamic hair for grass, fur, fuzz, carpet, etc.
Some of the crazier shader trees from Poser won't translate over, but who in the hell cares? C6's shader setup is hugely more robust than Poser's and if you spend the 15 minutes it takes to learn how to use Carrara's shaders, you'll have a wealth of possibilities at your fingertips.
The only thing I'm not sure about is dynamic cloth. Transposer handled it just fine, but I have too many deadlines to wait for Poser to run a cloth sim. DAZ's OptiTex plugin is on its way, so that should sove that problem.
I personally haven't had any issues with PZ3s in C6, but it is much faster to just load Poser content into C6 right from your Runtimes.
And to think I thought DAZ Studio would be the Poser-killer...