The lacroix I was riding/racing at esk8con has sHFI for the rear motors because I nuked the sensors off-roading pretty quick.
SHFI works 100% as good as sensors for off-roading. It’s a very impressive technology, if you have your settings correct.
Off-road is actually a better situation for sHFI than on road, because you can’t pull as many amps. High amps is where sHFI would potentially fail. Off-road you can’t pull as many amps because you’re limited by grip.
That said I never had any issues doing launches on my board at esk8con. Get your settings right, and the performance of sHFI would make you think you have sensors, if not for the annoying whine noise.