Maybe the Seidio Convert case is what you'd be looking for? It's kind of expensive, but looks like it provides a ton on protection.
Edit: Looks like this would work if your duty belt was 1 1/2" or smaller.
I cant post link just yet. But thats where I found the survivor case. Just change the dot to actual dot. Like I said if you dpnt mind imitation or knock off cases. Thats a good one other than defender