Janet from February you'll be able to just use your German account for anything you need in Ireland. ;-)
Like topping up my Irish mobile? Only a small thing and there are other solutions but it's just one of those small handy things I've been able to do with banking365. And the fees for withdrawing money from non-CashGroup ATMs are still a factor, too (okay, me being a bit better organised in general will take care of that but then there's still eurozone travel to consider).