I've had a few dabbles, your tutorial videos helped, I've bounced and broken a few things, managed to replicate Barney's bouncy belly and ball (from the CP webinar vid), made some bluebells shiver rather than wave in a breeze and starting to get some reasonable results with transmapped hair. The tricky/tedious bit is getting the weight maps right but live simulation helps enormously compared to running simulations.

It's a shame that geometry can't be exported though as it would useful for creating morphs and props. Hopefully there's an updated and integrated PoserPhysics on the way that will really add to the fun. The promo vids did hint at 3rd party developments.

@momodot, the only thing I've got that does what you're asking about poses is PoserPhysics 2012, ragdoll simulations with low joint stiffness, low gravity and Limits on, produce very good results.