Wow! I never heard of this before ... how is it being advertised? From the archives, I see it's been set up since June but it only looks like there are three or four on the list (or at least that all that have posted to it) ... is this true?
I posted at message on the Irish Wikipedian's Notice board two weeks ago about forming a Wikimedia chapter in Ireland (got one "maybe" back and Bastun posted a fair funny comment on my talk) ... but I didn't know about this at all!
A meet-up sounds like the first step to anything ... and something positive, anyway: those of us involved in Ireland-related articles are probably less like to end up Wiki-murdering each other if we had a face to put behind the screen name.
Regards, Oliver a.k.a. rannpháirtí anaithnid / sony-youth