You guys really did create a wonderful UX for a very separate market segment. Admittedly, we did draw some conceptual inspiration from your reader. In my defense, I will say that UX/UI is very constrained by a set number of factors which make "sidebars" necessary/obvious/essential and the organization of them preferable over other organization possibilities (TOC on left, misc on right). I'll admit that you executed this arrangement visually much better than I did, in my attempt not to scalp.
I'm a big fan of Inkling, and you guys make me wish I was still in school so I could use your reader. Major props.