As the frontend dev, any insight as to why you didn't go responsive with this? It's a nice looking site and you did a great job, but I'm surprised - since this is a publishing platform that obviously caters to multiple devices - to not see a device-agnostic approach to the site.
Long answer: Over the course of development there had been some thought as to whether or not the Softcover site would just be an informational site for the Softcover gem and a place for authors to get their sales stats, and then each book page would be its own separate thing that would be more or less fully-customizable by the author. Point is that most people would have had to be interacting with the site on a desktop because that's where they'd need to do things like install gems and run the server.
We've kind of moved away from the idea of having a Myspace free-for-all, towards something that is more of a designed garden, planning on allowing a good deal of customization on the book side – each book page loads a completely separate stylesheet from what is used on the rest of the site for that reason.
With that I'm going to be focusing on redoing a lot of the presentation side to meet what we'll need, and a part of that will be responsive styling.
Thanks for the answer. That's good reasoning; I figured as well as this all seemed put together it wasn't "oh, geez, didn't think of that!" so I'm glad to see there was a reason. :)