I'm quite a fan of Doves, and i also love Jermaines work... i think that the poster could be apt for the band, and if there is a connection to Katrina it makes it even more relevant considering that their latest album is based around the concept of cities being destroyed.... it's even in the title of the record 'In Some Cities There's Too Much History Comming Down', given the historical significance of NO i think it would be perfectly fitting.