The rifle weighs 8+ lbs before optics. That might work for the magnum rounds, but unnecessary for either 308 or 30-06. I'd be interested in one in 30-06 if they can find a way to lose a pound, a 308 wouldn't be bad at 1.5 lbs less weight. The Marlin 45-70 weighs 7-7-1/4 depending on barrel length, just about where the Ruger should be. A hot loaded 45-70 has more recoil than one of the 375 mags so there isn't any need for the extra weight.
When you get into rifle calibers 308 and larger you can get off aimed repeat shots just as fast with a bolt gun as a lever. This has potential.