Saw him live a few times, most recently at my local pub a couple of years ago. Although he’d given up by then, a lot of his set was about his drinking. He told a story about hanging out with The Cure when they were recording an album, and at dawn Robert Smith took him to the roof of their recording studio, got his acoustic guitar out and said, “Sean, what songs would you like to hear”.
His reply was “It’s alright Robert. I’m pissed and I’m going to bed”. It was both funny and poignant. RIP Sean.