Rob, while I don't have this rig, I have ridden IGH/gearbox MTBS for a decade now and I think a number of things are things are contributing to rear suspension performance you are touting, beside the main feature of having a lighter rear axle:...
Also, since riding the Nicolai down the trails, its remarkable just how:
a) just how quiet it is on riding down hill, and now every other bike is noisy in comparison. Just got the new Trek Rail, and although the Bosch is quiet, theres chain slap that is irritating,
And b) just how good the rear suspension performance is. Its absolutely brilliant and no doubt that the removal of mass on the rear hub contributes to this feeling.
The World's largest electric mountain bike community.