Would it be mainly to make sure you always have a copy?
If so, I think the the two micro SD in one SD slot won’t {probably) work.
Streaming to another device, and then record that, might though.
But personally I have no idea if there’s cables or splitters to do that.
Or if it is possible at all.

Interesting question though.
I’ll keep following.

My hunch is to agree with @rebbel‘s inclination. If the camera itself docent support simultaneous recordings to 2 cards, I would look for a way to steam the camera’s output to a dedicated device with this capability.