I can't get over the ESC key. I need to experience it in order to make a final decision but even though it's "there" the position looks awkward.
Sarcasm aside, I wonder how well this will work if you use Boot Camp. Does the TouchBar revert to a normal function bar when OS isn't in control of it? Let's say I don't use VMware, and I want to boot into Linux or Windows, what happens to the TouchBar? Installing Linux or non-OS X operating system could be made more difficult without function keys. And yes, VIM and other modal editors are going to be less fun with the loss of tactile ESC.
I'm hoping the TouchBar will have some failsafe firmware mode that allows normal use of Func keys when OS doesn't have control over it.
The worst possible case in my mind is buying a small, tiny external keyboard (dongle) with just the Func keys if Boot Camp doesn't have a good solution.