Just thumbsticks for now (gotta line-model out the rest), but it's very snappy.
Nothing needs to be installed or run separately, it's just a browser source that makes use of the web Gamepad API & Three JS.
(also yes this system should work fine with a normal triangle-based mesh and I'll probably try that later, I just wanted some cool debuggy line-mesh look since I love that aesthetic and there's nothing that does that currently)