Paul was such a huge personality. I wonder if Matt doesn't want to look like he's trying to upstage the memory of Paul (?). He seems very outgoing in person but on stage he probably knows its Neil and Nick's band. Just think about trying to fill the shoes of such a big personality like Paul. I think he's great. I saw him play with Beck and they had the puppet show. No one with hair like that can be too serious and shy!