I just did a run of FOW and before we all entered got a few new files for it, all the players did in our team. When we completed the run i got a Req 9 Katana which is non-inscriptable (since all items from uw or fow are inscriptable items), i get the feeling that the update we got will enable some gold items to be non-inscriptable.
I would assume the same would apply for UW, if anyone has completed a run from FOW or UW tonight and has got a non-inscritable item from the end chest let me know because this might have been just a freak drop, then again maybe not, we are talking about ANET here
Pol