I believe the 409 is built in what is now a joint factory in SC, along with the 379 and any of the DS models using the same hulls.
ALL of the models except the smallest will have multiple interior options.
Sailboat Jeanneau Sun Odyssey 409 - Jeanneau Yard
general jeanneau site
JEANNEAU shipyard, boatbuilder for sailing : sailboat, motorboat, powerboat racing boat cruising fishing yachting - Jeanneau Yard
owners news site that goes with the forum that zanshin linked earlier
I would not be surprised if the 409 has not done an ocean passage or two or three. May Jeanneau models get used on the ARC out of Europe. with usually the highest % of boats in the crossing. The recent ARC world cruise, IIRC the 49 or 54'ish foot model was the most used.