I'm not sure if you have already discovered this but what I do is to right click on the Poser Surface tab, select Select All. Everything should then be selected. You can tell because all the title bars of the nodes will be highlighted. Right click again and then select Copy. Now use the drop down menu to select each body part with this material. Click on the Poser Surface again, right click and then select paste. It's not ideal but at least it saves setting up identical materials on each body part each time. :)

 

Edit to add: after you have done the above shift click on the button that says Remove Detached Nodes. This will remove any loose nodes left behind by the old material.