One of the UK’s most transgressive and experimental bands, GNOD, are on an ‘R&D’ excursion next week, including a stop at An Spailpín Fánach. Mike McGrath-Bryan talks to co-founder Paddy Shine. Since coalescing in 2007, Salford, Manchester-based collective GNOD have taken to casually chipping away at such dated restrictions as genre, medium of presentation, and…