The chief drawbacks of using a CGo3 on a TH are bad onscreen video quality, lack of manual pan, and a complete absence of the advanced photographic features (CGo3 PRO mode) of the camera. Those features are blocked when mounting on a Typhoon H. Trying to get around the block by upgrading the CGo3 firmware to CGo3+ firmware will not work. The upgrade is also blocked.
Mounting a CGo3 on a Typhoon H is marginally functional. But a Q500 with the same CGo3 is much more useful.