I was looking for and making a method/tool to draw nice smooth panel lines on a mesh a few years ago with Maya,
but I got stuck as it was not very usable for more complex shapes besides some spheres and cubes;
after playing with Sweep Mesh, I used it to solve some technical areas in which I had failed before.
Now, the tool is more stable and usable.
The good thing about creating a line with mesh is that I can change UV of a model without worrying about redrawing the line,
or changing the model's shape and being able to recreate the same lines fast.