Then you get a biomechanical exoskeleton that also uses magic. Or in other words, you basically get a scarab. (Sometimes in DC scarabs have magical properties)
I'm pretty sure they have organic aspects as well. But either way, not that big of a change other than a more fluid interface. Id consider it the difference between windows 10 and 11
Lots of extra variables here, but if i were to guess, it would just make your magical biotech into a magical synthetic biotech. Perhaps the main advantage would be that it might not have a will of it's own?