Sad news indeed. It took me quite some time to chew them, but once I did they became one of my favorite bands. I really like how their pop grew on me, a bit in the same way as Prefab Sprout (had the same problems to get along with their debut). They clicked with me around the time of Crooked Mile and I remember the day I purchased that vinyl at Oxford Circus HMV store. I've always hated that black shiny cover since it couldn't hide a single fingertip. I have no clue where's that record now but I'd love to give it a listen this evening especially that Spotify won't do it at these special moments.
RIP Cathal, you surely didn't know that your music made it to very remote, obscure lands but I'm sure it would make you proud.