Followed them as a kid and stuck with them as indeed I have stuck with Rovers, albeit from a "barstool" (well sitting room really) since they were thrown out of Milltown. A football team is for life. Same for me with Ards in Northern Ireland and Raith Rovers in Scotland. Supported them as a child - still support them (with the same success!).
You should listen to it sometime - it is definitely not a Dub accent. It's an English accent. I know a Dub accent when I hear one having being born and bred in Dublin.