To find out whether the bike carrier is compatible with a Ford Transit Custom (nugget), it's important to check the technical specifications of the vehicle and the bike carrier. The Thule EasyFold XT is designed for use with trailer hitches, but I have no specific information on its compatibility with the Ford Transit Custom.

Regarding opening the tailgate with a loaded bike, the Thule EasyFold XT generally allows easy access to the boot thanks to an intelligent tilt function, even with bikes fitted. However, this may vary depending on the vehicle model and specific configuration. It is advisable to check the dimensions and functions of the bike carrier against those of your vehicle for optimum compatibility.