I hadn't been to Fibber's before the takeover/COM, so I don't know any different. From my three visits in the past month:
-The staff (tables and bar) are attentive and professional.
-The food is excellent, albeit somewhat spendy ($20 for a Guinness and fish and chips? Sheeeesh...).
-The aforementioned Guinness was, as advertised, Perfectly Poured(tm).
-The ambience is as genuine as it gets.
It's not quite on my "I have to check in here at least once a week" list, but it's a good occasional outing.