Hi trevorblack,

 VF cloth simulations are independent of Poser simulations. In fact, the VF Reinforce feature is basically what Constrain Groups allow in Poser 6. "Reinforce" the parts of the garment you don't want to drape or simulate.

Therefore, if you want to work only in VF, use the Reinforce feature in VF Fitting Room.

If you are going to export to Poser 6, then using the Reinforce feature isn't necessary. You'll need to export to Poser then run the garment in the Poser Cloth room simulator, keeping in mind the areas you want to Constrain (or Soft Decorate). Playing with the Cloth Dynamics settings before running the Poser Cloth simulation will help achieve a heavy or thin weight to your fabric. I usually change my Fold Resistance, Stretch and Cloth Density to achieve the fabric weight.

One more thing to help you achieve better draping results is in the Simulation Settings - Cloth Self-Collision. This helps prevent the cloth to fold on itself like a cape might intersect itself. The drawback is that it requires more computations, therefore longer sim times and more of your system resources (but hey, I like to use it :)

Hopes this helps,
-Brian