Pano2VR skins won't be supported literally, but I'm planning to add a set of much used items (different types of hotspots, text/image/video popups) that can be configured/chosen through userdata or tags in Pano2VR or directly in VR Tourviewer with the tour settings button.
If you have requests for specific skin items you'd like to see included, please post them here and they will be considered.