Great tool! I love the additional post-processing on the WheelCheck output, so the values are consistent. I've gone and implemented LUT support for my own application too, and I'll certainly refer to this as *the* place to generate LUTs from.
In short - yeah, it easily and completely fixes overshoot/deadzones in the force feedback, it's easy to use and understand and overall a neat piece of software. Some more integration with WheelCheck would be neat (e.g. embed & launch it) but eh, third party software.