Backslash appears written out instead of using a string with a double backslash so that it just displays \
You're also able to bind the Fn button and some of the function buttons (it let me do F1, F2, F3, F4, F7, and F12) and they all also end up with long written out names. The function buttons are only bindable for me when they are performing their functions, so I can't bind them if I'm holding the Fn key or have function lock on.
And yes, it looks ridiculous when you try to play with any of these buttons bound.
I also think shift should be allowed to use for bindings. It would be more comfortable for me, but the space bar works well enough for now.