Well, thats not quite true is it.
I said that 3.1 college gpa in the context of other numbers isn't really competitive so you should be realistic about the (low) chances of success of an application to UK medical schools. Most the NAs who get into UK schools, in my experience, have stellar credentials and have offers at top US MD schools too. I didn't say not to apply anyway (a 1 in a 1000 chance still means one person gets in!).
Ireland though is another matter and I should have mentioned that alongside DO and Carib as good options for someone with a 3.1gpa but other things going for you (and 2 papers and years of full time research will sure look good to people looking at the wider picture). I think you'd have a good shot at Irish schools.
UK doesn't equal Ireland in terms of admissions for NAs (although by all accounts standard of training is similar).
As for Ireland - GO FOR IT!