CCU Addon with CUL Stick for MAX! devices


I switched to HASS a few month ago, the only thing which is still running on my old PI is homegear, for controlling my MAX! climate devices.
Because there is no working homegear addon for HASS.IO, I am thinking about switching to the Homematic plugin which is based on CCU3.

Is it possible to integrate MAX! devices into CCU via my existing and for homegear working CUL Stick? Or do I have to build an own homegear plugin for doing this?