My experience 30+ years. Including several hardtails. I notice that the Ridgeback is very stable . I find that it takes a bit more effort to turn the bike at speed. Bike wants to stay upright due to the gyroscopic effect of the massive rear gyro (read tire).I strongly suggest that you FOCUS while turning at low speeds and on bumpy roads until you see how she reacts in those scenarios. From a stand still make sure that you get moving a bit before you turn the handlebars. I have saddle time on 4 other dogs and I like the Ridgeback the most.
Here's my spin on the geometry-
The turning effort on any rear fat tire bike is more due to the front and rear tire patch center lines (F-- ---R) become greater misaligned the more the bike leans to the side. This makes the bike want to upright itself to realign the tires center lines.
When you ride a fat tire bike you can make it easier to steer at low speeds, such as going around an intersection corner by not leaning your body into the turn as much and giving a bit of counter-steer. It will take some time to get comfortable with if you have only rode 225mm sized or less rear tire bikes.
Enjoy the hell out of it. After 500-1000 miles you'll jump on it and take off like it's a minibike!