This is actually the type of post of bra my surgeon recommends as she doesn’t like anything tight at all, not even Macoms. This is because she foscuses on the natural look and so the implants will drop more due to the lighter support.
I don’t see why you couldn’t wear it, my only concern would be whether it would be supportive enough for your size of implant. My surgeon only tends to do 325-350cc.
Ask your nurse or PC and see what they say. Xx