That's exactly the thinking I was looking for.Yes, kevlar body armour is fairly inflexible. This is why we usually have plates made of kevlar inserted into a sort of vest which we then wear. (I say we, I'm thinking like the soldier I used to be.) Nothing stops you have a series of hybrid armour plates formed into a sort of scale mail like you've got into the picture. It would be heavy (maybe 15-20kg). But weight is relative, I used to run around carrying 15kg of kevlar body armour, a gun and ammo weighing 10-12kg and another 45kg of kit. If you're fit enough the weight won't be an issue unless you're getting really physical for long periods of time.
Okay, I think this is going to work and it's going to be hella fun. And we won't even have to lean too much into the Rule of Cool for a change. lol