I haven't heard from too many people who are trying this out yet, but the homebridge-control4 plugin has been installed nearly 200 times. I have been in touch with one person who is successfully using this driver in his project... so far so good.
I have a pre-configured homebridge appliance nearly ready to go on sale. This will be a drop-in network appliance that comes pre-configured with everything needed to get the Homebridge driver running with HomeKit, and which supports a super-easy web-based configuration. Plug it in, enter a few settings, and everything should "just work." It will even auto-import the device configuration from your Control4 system. Here's a little sneak-peek. MSRP for the hardware box will be about $225.