Yes, I did actually but only after I'd picked the the Eagle ones. Looks heavy to me... and I wonder about overall wear on the other diff components. Don't know myself.
As I said I picked up the Eagle ones and they've arrived, direct from Eagle in Japan. They even sent me a picture of the package and label before they sent it! Mind you shipping wasn't cheap so I averaged it out over a few.
The quality seems fine, they're a little bit harder than the Tamiya ones and the teeth have a flatter, wider peak but the mesh to belt is perfect.
We'll see how they go.