Yes, it does work pretty well.
I am using the Desert 3.0 pack and have noticed that the IR modes are reveresed, I think due to the colour change of the ground units.
For examples BTR have desert hull and black tires in WHOT mode, Hull is dark, tires are white. In BHOT mode, Hull is white and tires and black. I have better results just using CCD now, with high MFD resolution.
I feel that the IR modes just swap Colours rather than having a form of dedicated heat map, so dark appears light and light dark, I also see this from terrain. A are of terrain suddenly becomes bright or dark in BHOT or WHOT depending on its texture or colour, which makes no sense.