I was on the island with work last Thursday and Friday. Saw an Aussie bike with a NSW plate in Castletown! I assume he shipped the bike there as opposed to riding from Australia.
Also saw/heard four Yanks chatting in Peel, they were on IOM plated bikes.
On Thursday evening I spent 20 minutes chatting to a French sidecar racer in the Casino. He spoke little English, and I little French, but he knew my sign language for big balls ;-)
Heading back this Thursday for 8 days, Giggiddy.