They're fitted! My first impressions after driving 40km home after fitting is excellent. Road noise around town and on the highway, to my ear, is negligible in comparison to the OEM Latitudes.
I ran the GPS speedo on the way home which was pretty well bang on (and there's only like 2% size difference anyway).
In heading to Melbourne this weekend for the GP so I can report back with some highway fuel observations next week.
The clearance to the bolt next to the front wheels is enough that I don't think it would ever hit, even under any sort of decent lateral load.