Given the opening of the Keynote and the focus around accessibility, I'm really curious how Touch Bar will work for non-sighted users. Will it require running y

Given the opening of the Keynote and the focus around accessibility, I'm really curious how Touch Bar will work for non-sighted users. Will it require running your finger over the controls while VoiceOver relays the context of the button? Or, will the Touch Bar require "focusing" where a user swipes through the buttons, similar to iOS? Personally, I don't need application aware function keys (sure, emojis are cool in messages...) and would love an option for the 15" MBP to have physical keys, similar to the 13" option...