To Paddy, I unfortunately have never had the pleasure of visiting Vincent's
They are Trinity unfriendly ;( hehe just kidding.
I wouldn't say they are crying out for doctors in Ireland - there is a bit of a shortage, but a crying out means exactly that - it doesn't mean they have the resources to fund increased services. I do think that there probably is more shortage at a GP level - it's amazing really, there are no GP services in some of the most needy places.
The situation isn't here yet where there is a shortage of higher doctor positions (not like in the UK). What happens when you graduate and if you intend to stay, is that you are placed in one of your teaching or affiliate hospitals for your intern year, so you don't necessarily have to go searching for a job. After the intern year, for those who chose to stay quite a few decide to go elsewhere (ie. back home for non-Irish) and a few stay on.
During residency..med school students aren't taking over the role of nurses! no way! med students - we try procedures once in awhile, given the opportunity...but it's not a regular thing. Intern year, you will be probably doing a lot of things like taking bloods, etc. However, you musn't assume this is a nurse's job either. In the US, things have gotten so specialized that nurses do assume those duties. But it's arrogant to think that just because you do the same thing here, that you are being "relegated to nurses' duties." You have to know how to do the same things and do them well, otherwise you'll look like a fool of a doctor.
I think your confusion is lying in the differences between intern year here and intern year in the US. Intern year in the US is a singular experience - it is defined as the first year of your residency and therefore specialized. Intern year everywhere else in the world is not connected to your specialization of interest, but is a general skills-gathering time. You do 6 months of medicine, 6 months of surgery and aren't specialized yet. It is in this time that you do pick up some skills, but we've just noted here that you do an awful lot of paper pushing and pricking as well (same as intern year anywhere).
You're also confusing "residency." Residency is the period after graduation, in which you are practicing in the field you're specializing in. You can be let loose after residency to practice on your own, but this isn't at a student level. During residency, you acquire all the skills you need to be an independent consultant/attending. It basically doesn't have anything to do with medical school training except that you've obviously had to graduate from medical school to enter a residency. So it is nearly impossible to be unprepared or unfit for practice after following the progression of education, so your fears of Irish graduates being unprepared is mislaid.
As I said before, for any FMG coming to the US system, there is a catchup period while you get used to the US system (1 week to a month or so), just as there would be for a US grad starting into the UK/EU/Oz system. It's more a period of adjustment rather than a skills thing. For instance, no medical school really teaches you how to do an internal jugular line - you might have had a chance to do one in schooling, but it's not a regular occurrence. In the US, you learn and practice doing it during your residency (surgical or IM), so even if you have graduated from a foreign school, you're not "behind" in that respect.