I do, but here is something I discovered in the latest patch: you can invert the X-axis based on whether you press-and-hold the middle mouse button in the top half of the screen, or the bottom half.  In the top half, the world spins left when you drag to the right.  In the bottom half, the world spins to the right when you drag to the right (which is how I like it).  The Y-axis remains unchanged regardless of where you click: dragging up spins the world up, and dragging down the reverse.

I would rather set this in options though so that it doesn't matter where on the screen I click.  Also, I'd like an option to reverse-pan the camera with the left mouse button.  The Sins level of UI customizability was refreshing.