The Modo->Poser route already works well (for making poser content). The Poser->Modo route (for rendering) takes a fair amount of work.

I'm interested to see what the Lightwave exporter in Poser Pro will offer, because Modo can read .LWO and .LWS files directly (lightwave scenes and lightwave objects). That should make it a whole lot easier to get complete poser scenes into Modo with materials and textures intact for rendering. It's currently a bit of a pain (via obj) to get complex material stacks set up again.

EDIT: It's also worth noting that as the Poser+Modo community grows in numbers we are likely to see better integration between the 2, perhaps only at script/plugin level, but maybe more in time. 

The Modo community is also pretty cool about Poser. Those who don't use or don't like poser don't feel the need to condemn it at every turn, they just use other more sophisticated rigging and animating tools.