I was there Saturday and would certainly say the atmosphere was ‘lively’ but there was no real threat of violence.
I was surprised at the number of police there. Police and stewards summed to take quite a relaxed approach, as there were quite a few ‘missiles’ going back and forth - I think it was mainly food. The City fan with the flare was hardly discreet, so I can only think he wouldn’t have known what the likely punishment would be, not that I understand how fans smuggle them in, with nearly everyone being patted down on entry.
The closest to any real trouble I saw was one of our fans trying to steam into the Hull fans on his own at full time, but luckily one of his mates seemed to manage to get to him before the police did and carry him out.