Done it loads of times when couldn't get tickets for away ends, Arsenal x2, Spurs, Man U x 3, Liverpool x 2, Southampton, Barnsley, Millwall, Chelsea, Peterborough, Oxford, Leicester, Charlton, Wimbledon, Burton - only one I had to leave early from was Spurs, was the last game of the season when Makin scored, had a really nasty edge , was surrounded by Spurs lads who were looking for bother and had my Mrs with me and she felt uncomfortable so left at half time.
Couldn't and wouldn't do it at the Landfill though