Oh that's good 
Perhaps my luck may even improve *prays for LC to grant request*
Sorry, but limey is right, i did cut all permissions for new derivative works based on my ships due to some stuff and mainly because Excalibur.
the policy extends to everyone and i would not be fair if i let one person or another to have a different answer, hope you understand.
As for personal use, of course you can do whatever you want with the model, even turn it upside down if you want, as for POTDS and renders, i have no issues with then, just please try to keep credits updated to avoid mistakens like the one on the first post of this thread, that DJ pointed out.
Even if it were a bit modified by JL studios, this is still my intrepid model, with my unwrappers and derivative maps. So, the list of credits is bigger, with a lot of people working on the model, but still starts on me.