UPDATE:
Well, I bought eBay item #290041300293 UNITAS ETA 6497 WATCH FITS TO PANERAI PARTS - TITANIUM
from this dude, he's totally dragging his feet. He told me his last one of these had a nick in the case, so he's trying to get another--this was 2 or 3 weeks ago. He tried to switch me to the SS version. I'm hoping it wont end badly (for him). I'm going to be in the UK in a couple months.
Anybody know him? He used to run a rep site.