What I meant was that given the choice between two tools, one of which is pleasant to use (for whatever reason) and one of which is not, I will always choose the one that is more pleasant to use. So far, reading and testing, I have not seen any reason to prefer appCode to Xcode. If appCode had some sort of killer feature, then I would put less emphasis on the way it looks.
In addition, this sort of interface displays a fundamental misunderstanding of OS X and iOS by Jetbrains. Integrating with an OS is about more than getting your code to run and do stuff. I am a user as much as any iPhone owner is a user.