That is actually not a stupid question!
At preset, LightSpace uploads the 1D LUT and 3D LUT simultaneously.
So ideally you profile with a full volumetric path set, not a Grey Only profile.
But, we will be changing this in a future LightSpace release, separating the 1D Upload from the 3D, so the 1D LUT can be done first, followed by the 3D LUT.
Keep an eye on the LightSpace updates info to see when this change is made.