JAMIE2k9, thanks for pointing out the accuracy of my statement. TCX are not regular visitors to DUB at present, but since we never know from one year to the next where an a/c may operate, if we see a TCX a/c in DUB next summer, no-one in the airline would be surprised, particularly if DUB is a growth market and the UK is struggling. The MINT AIR/AURELA 75's you allude to are in NCL this year, two of them were in LGW last year, next year, who knows. They do, however, work using TCX callsigns and flight numbers (unlike MON et al.) and cabin crew.
The DUB nightstop a few years back, was a welcome break from the general monotony of summer flying. Lets hope to see it again.