It may be impossible to get exactly what you're looking for. There aren't that many Kydex IWB rigs out there compared to OWB, and most of either are only made for the most popular makes and models.
I costs big money for dies, etc. to set-up production for a new model holster in Kydex. If there doesn't look to be sufficient demand to generate the volume necessary for amortization, it doesn't get done.
You might have better luck finding Kydex if you try an OWB rig. While there might not be a model specifically for the .45 EAAs, there could be something at least compatible.
For an IWB you'll likely have better luck in leather. Even if none of the big producers have one you like, it's not really that much more expensive to go custom in most cases. Especially if you don't insist on 'exotic' materials or decorative handwork.
The big plus is that you can order exactly what you want and it'll fit your pistol perfectly. Leather might not look as "trick" or "tacticool" looking, but it's every bit as functional and durable for us "non-operators".
I'm still using leather IWB and OWB holster rigs that I bought over 20 years ago. Rusting has never been an issue and they haven't popped stitching or become too loose for good retention either.
Good Luck. Hope this's of some help.