I should add, some news - we hope!
We seem to have eventually got a viable 3D LUT (combined with 1D LUT) working with our BenQ display and LightSpace.
We've just released a LightSpace update (a full release not a beta version) with the latest capabilities.
It can be downloaded via the normal website request process.
One word of warning, some of the first users to test this (and the previous ) version have reported that their displays report 'Does not have 3d LUTs'.
This may be a display firmware issue?
(LightSpace will interrogate all displays when connecting to them to make sure they have 3D LUT capability.)
We are waiting on information from BenQ regarding this.
Regardless, the calibration is working here, and BenQ have also tested and report the same.
Please do let us know any user findings.
Mob Boss at Light Illusion