I don't see any reason why it wouldn't work with a Sony or Canon FF macro in the 60-75mm range. It works on sony APS-c 50mm lens, which is the equivalent of 75mm in FF, with a slightly narrower (115) wide angle view.
But, I see that Sony FF only has a 50 mm macro (too wide?) and a 90mm (too long?). But, I am sure Nauticam is doing more testing and will update. Don't know if Canon has a 60mm or not in FF
Sony has a 70mm macro from Sigma, but it extends to focus, so it might not work at all.