While I absolutely love this model, I do not think there will be a great rep of this. A7750 is quite thick, then add a plate on top, it will be ~14.5-16mm thick unfortunately. I'm betting OMF or some other factory gives this a go, but it will be a one-time thing that looks okay from the front, terrible from the side, and barely okay from the back. I don't mean to be a downer - at all - its just that the rep companies follow demand and the demand for this watch would be slim at best.
I sincerely hope I am wrong though!!!