You can export a d-force item from DS, use the DUF prop converter python from the Marketplace here, use D3D's dsf tools or any other way to make it into an .obj.  Import it in Poser and set it up as dynamic cloth.  I do it all the time with DS only d-force clothes that I'd like to use in Poser.

By far the easiest way is using the python script DUF Prop Converter

Here's an example:  I converted Hello Winter to La Femme for the Azraa promos.  Note:  in this image I converted only the sweater, not the turtleneck underneath because La Femme already had one and I did not use the bump maps from the original hence the difference in how it looks.