Short answer: the Grizl is most at home on rough gravel thanks to its 45 mm tyres out of the box and ability to even fit mountain bike tyres if you’re riding extremely rough surfaces thanks to a big 50 mm of tyre clearance.
It’s still fast and capable on quicker hard-packed light gravel roads.
But on these roads the lighter Grail has an advantage in terms of speed.
And on light semi-technical singletrack the Grizl can still get the job done in the hands of a skilled rider.
But it can’t match the capability of a mountain bike with its wide flat handlebar and trail-optimised design across the board.