I am not aware of any Hubitat integration possibilities for QolSys IQ2 or surety.com. BTW I believe there is an IQ3 out now. It looks like a nice system.
For Home Assistant there is a reverse engineered Control 4 based integration although it has some issues still particularly with random disconnects. What they also discovered is that the QolSys ZWave devices are not accessible even via this API, so even then your two ZWave meshes would be totally separate.