I have it and for my shooting in uncontrolled situations with varying WB I couldn't get good results out of the LUT at all unfortunately. Maybe in controlled shooting it would be different, but it was too fragile to work in the situations I work in.
The BMMCC, however, gets spectacular colour right out of the gate. It's literally giving me better colour after a 2 minute effort than I could get from my GH5 with hours of effort, regardless of the colour profile and use of LUTs, CSTs, of manual grading.
I believe people think about cameras in the wrong way. The conversation is about "how good is this camera" or "how good is the image from this camera", and the answer to that is almost always "as good as the operator". But some cameras are really easy to get great results from, and others are almost impossible to work with and only the best operators in the world can get great results from them.
The question should be "how good is the image from this camera when used by an above average user under normal circumstances and with a moderate amount of effort in post?". In this instance, the OG BMPCC / BMMCC have to be some of the best cameras ever made.