I can’t say I notice the added ramp up or volume reduction of Huck Norris. People regularly destroy rims with Huck. It doesn’t stay fastened and pretty much falls apart in the lifetime of a tire.
With Cush on the other hand, the ramp up is hella noticeable. Damping is excellent, flats are drastically reduced. Burping isn’t happenning and lateral tire stability is superior . Rim damage is way less likely.
On the back, I will always run Cush on my enduro / dh bike. It’s too damn good, weight be damned. If adding grams is a concern for your down country dentist-Cycle wait a month or two and an XC version will be out.