Rc controller is still available?

[Calabrone]

Hi and congrats for your work. I'm planning to build a drone with image detection utopilot with raspebbry pi 4. The idea is to use it to make it follow me during my mtb ride.
I was thinking to make something similar to your project. In this case, is it still possible to bypass rpi controll with classic rc controller? The idea is to let the drone follow me but take control again with rc controller if something goes wrong.