After stumbling upon this thread at TuDiabetes, I went ahead and purchased an Insignia Pilot silicon case for my new G4 Dex. The dimensions of each are pretty similar (Dex G4 = 101.6 x 45.72 x 12.7 mm, Insignia = 100.0 x 49.20 x 11.1 mm) and each has a rectangular screen with circular controls. I held the G4 receiver up to the screen to visually compare, and I figured the circles wouldn’t line up perfectly, but it looked like they’d be pretty damn close. (I’d also like to note that I ordered this one specifically, and it came with a second case in black, pictured, and a removable belt clip and arm band all for only $4.87!)
As you can see in he photo, the alignment is somewhat worse tan I had hoped for. I lived with it this way for about a week, and then this happened:
The result is a somewhat wonky solution that adds traction to the receiver so it stays firmly planted in my jeans pocket, and cushions it a bit when it does manage to fall. Since the case is made for an entirely different device, and I’ve cropped out a bit of the structure, the receiver is very easily removed, but that doesn’t really bother me. Plus there’s the added bonus of a conveniently located window perfectly framing the charging port.
I’m still hoping Dexcom will get there act together and sell a snugly fitting case designed just for this receiver. But until then, this may be the perfect solution.