I lived in Ireland (Galway) for ten years up to last October ('07) and there were very few who wore kilts. A group of kilties did emerge and I went to their inaugural dinner, but they were a rather strange bunch - some of them seemed embarrassed about wearing a kilt and it wasn't very well organised.

Just as I was leaving I met a guy who was a regular kilt wearer (from Irish dancing), but that was about the extent of it.