I have. Interesting helicopter.
The Australians had the G model. The one I flew at VX-1 in Patuxent River, Maryand was an F model.
We were testing the newer Seahawks at that time (I had left the first Navy 60 squadron to come to Pax) and it was clear that the H-2 Seasprite was going to be "sun-downed".
Because of that none of the H-2 pilots wanted to fly the H-2 any more and wanted to stack hours in the 60 - so I got a lot of co-pilot time keeping the two H-2's the squadron owned flying.
The coolest thing about the H-2 is that you could fly with the doors open. I loved it!
Here are a few pics: