He seems a genuinely honest, likable person both on and off BGT, but I have really started to notice over the past couple of days that he never, ever says anything bad about anyone, regardless of merit or talent. He's very Louis Walsh-esque in that every act he sees is best of the night and his new favourite.
He does need to be a little bit more harsh at times.
Still though, like I said he does seem a very nice person both on and off the show so he's already 1 up on all the other judges.