It's not a perfect fit for data and chart type (it's very close to just a chart of y=x), and when and how to show nothing is a big and tricky problem. (And obviously the default axis labels aren't gonna cut it). Still, I'm excited about the idea (which is probably not completely novel).
And I gotta say, this was even easier to do with ggplot than anticipated. To go from the Line Chart on top to the Gutter Chart on the bottom was primarily one line of code.
@matth I started reading comics in the last few years, and it was easy to see some parallels with viz, but it wasn't until hearing McCloud on 99% Invisible in January and reading his book that it all really clicked. Since then, I've noticed -- no surprise -- that others were also thinking this through. I definitely drew inspiration from what you've published on Medium.