>>104465409I was thinking about this a little more and they are 100% compliments to each other and it's definitely planned. Not even shipping related, just character.
Marinette can be quite the hothead and jumpy regarding people she deems not a great person (though she's usually accurate) whereas Adrien has been taught to stay immensely calm and passive, though he isn't afraid to be open and honest to somebody like Lila.
In comparison Ladybug is cool and confident and tries to be as collected in fights as possible, to be a pillar the city can trust in, Chat is... you've seen the show. He's wild and willing to jump in headfirst before thinking if people, particularly Ladybug, are in danger.
The reverse personalities in the suits, and I find it interesting and makes me reflect on how I behave in front of different people... it's obviously not supposed to affect an audience but it did for me.