Think Sherwood picked Charlie Insomnia based on the fact that he had PL experience, whereas Gil didn't. Guess he didn't have too much time to get to know the players when he was thrown in at the deep end, so just went with what he thought was the best mix of players at the time. Obviously, since then he's had time to analyse each player in training and in pre-season games, so it's clear that Gil has risen in the manager's estimations, whereas it's been the opposite for Charles.