Does a USB/bluetooth gamepad work on that version? Or are people really out there playing GTA on a tiny touch screen?

I just tried an 8bitdo controller I had lying around. It does work, but the controls seem all wrong and need to be remapped. I may do that.

I never carry a controller with me. I'd love to just be able to pick up and play in a waiting room or something without needing to plan for it or having an awkward setup. The MCON looked promising, but still probably bigger than what I'd want to carry around.