Re: Both Manchester's and Both Milan's Kits??
Nope, I don't quite agree with you.
Since I know Manchester better, well, black and blue together is something quite new at-least since many years from now. 3-4 years before (2008 if I still remember), there were that Blue Away kit which was quite unlucky for us since we won barely some matches with that kit. The only big match that we won with that, was the Semi-final against Arsenal, I think.
Then we began using the blue as Alternate Color kits thereafter and White became the Away kit color. Well, the white was not bad overall but each time, we used it against Barcelona, we lost in both 2009 and 2011 final. I still don't understand why both times Barcelona was allowed to play in Home colors btw. In 2009, we were the previous champions and 2011, we were in Home Country. Logically, we should perhaps have get more honors but anyways, that's history.
Coming to this new Away kit, I think the Black addition is give it some more charm both on terms of luck and visual. Also, Inter's bars are vertical while ManU's are horizontal. I like this one. I think I'll command one with the "19 Champions" writing on it soon.
As for City, well, their Away kit always had vertical stripes. The black & red strips are more refined and noticeable than on black and grey. It do looks better also.
Also, this might signify or confirm the quest of City this year to clinch top honors instead of random places because don't forget red is the color of Victors somewhere.
Don't you notice a similarity (apart being all top and best clubs existing in their countries or even internationally) between Manchester United, Barcelona, Arsenal, Liverpool, Spain National Team, Bayern Munich, AC Milan, AS Roma, Ajax Amsterdam ect...
Don't forget, kits apart being providing an "identity" for a club plays important roles nowadays. Their sales provide important and crucial financial support to the clubs and thus have to be attractive and trendy. Also, they should somewhere play a positive psychological attitude on the players.