So I figured why my custom pane doesn’t appear, there is a setting, customise web parts, so I changed it for my members and readers. Tried to save the settings but becuase SPS zones disallow personalisation it wouldnt save them. It half worked in WSS but I figure the half that broke was probably me.
If you want Custom properties saved in SPS you need to save them elsewhere, it would seem.
I will have to revisit this later, at the moment Im creating a WebPartBase and Skinnable WebPart Frames. Dont Ask.