I also had it in the Bierhaus. I'd say it's more than just a re-branding, because it's like a completly different beer. We had one side by side with a Rebel Red, and it was a much deeper ruby coloured pint than it's Cork version. A lot richer in taste too. If it was a blind taste I would have said that Rebel red was Molings, as it tasted a little watery beside O'Hara's Red.
Definitely worth a try from the tap.