So many useful replies! Thank you. I guess my initial question was if, by doing a DIY job, I’d miss some invisible technical step specific to Arri… From all the responses, I guess that to convert footage using Arri LUTs simply IS just that – their suggested LUTs – as pointed out, those can be customized as well. So there’s nothing wrong with saying “Erk, I don’t like that result. I’m going to use another LUT or create my own option”. Especially if in the circumstances as the cameraman having made some ‘interesting’ decisions! 🙂