That's an accidental omission.

"ociobakelut --look" totally makes sense.

It's not super straightforward to add, unfortunately as ociobakelut
currently creates a new temporary color configuration for all of the
--lut style commands, and in this case you'd need to make a copy of
the existing profile. But... the total of lines of code that would
need to change is probably just a handful so if you'd like to take a
stab by all means do so. ociobakelut isnt too scary.

If you're not up for the challenge, I'm happy add this early next week.
https://github.com/imageworks/OpenColorIO/issues/265

-- Jeremy