As someone that tries to condense posts and comments, I have 'Show action bar by default for comments' disabled. Now, as score location has been altered, I'm not able to see comment score. More problematic is there's no longer an indication of whether I have already voted on a comment or not.
In order to get this information now, I either must enable the action bar for every comment which fills a lot of the screen with buttons that I don't need, or press and hold the comment to expand the action bar manually. This is a reduction in displayed information that doesn't seem proportional to the benefit of a 'cleaner' style.
At the very least, I'd think the score should be put back next to the commenter's name when the action bar is disabled.
Comments with the action bar disabled:
Comments with the action bar enabled: