So, the manual says (page 101-102): "Hill hold control does not activate where the motorcycle is on level ground or facing downhill." I have not tested it downhill, but it activates on level ground no issues. Don't know why the manual is lying.
So, the worrying part: "Do not continually activate the hill hold system for periods of longer than 10 minutes. Continuous activation of the hill hold control system for periods of longer than 10 minutes may cause damage to the ABS system." Two things to consider, where I need to use it, the hold requires around 10-12mins, I live where we have a lot of bridges that open up, while they are letting ships come though, you are sitting uphill. So, if I overstay 10mins (who knows when the damage occurs, maybe 8mins - who checked?), I can damage ABS? What a bad design. Thus, I am afraid to use it where I need it the most. The way I read it, use it for more than 10mins, pay $1000 to your dealer for ABS replacement. Is it a good system, $100 per minute of use?
In addition, it says that the hill hold system can deactivate due to internal fault. This means that you can start rolling back without a warning, likely causing in a crash into a car behind you, or laying down the bike with you on it.
To me, it seems such a gimmicky system. Not made for the realities of the world.