[ Without much hostility at all. He does like what's going on here, upping the ante, finding things that haven't been explored to death yet. It's not just the vampire thing and that's, to be perfectly honest, a huge relief. He doesn't want to rely on gimmicks.
He will, on the other hand, make good use of gimmicks. Leaving Ianto's neck to its own devices, Spike makes a trail of kisses down his chest in an agonisingly slow and steady fashion. ]