I love Shane McGowan's work - his songs, of course, but also the gravelly growl of his voice. I think that part of the appeal of FTNYC is that it's a contrast to all the schmaltzy songs which assure us that Christmas will be wonderful and magical. We all know that's often not what happens. People do have rows, they get drunk, they look back at the past and wonder what happened.... but the song ends on a hopeful note, as the singer has held on to their dreams.
Shane wrote some fabulous songs. I think that my favourites are The Boys From The County Hell and The Sickbed Of Cuchulainn, but so many of them were good. If I had to classify his work, I would call it modern folk rather than punk.