Did you ever get any official contact with Ikuu/Mercator on this? I bought a few of their double GPOs, which are working well, although I need to automate the fingerprint recognition and add power reporting handling.
Off the back of this success I just bought a few of their 70mm and 72mm RGB+CCT downlights, two of the Donovan flat panels and one of their motion sensors. I suspect they will work with far less problems with standard drivers.
Anyway, I am happy to assist with driver development and testing for any devices that I have that you don't. I would love to give this company any support that I can since they have taken the bold step of releasing and getting approved a bunch of products for the Australian market at a super reasonable price.