Even though there are plenty of differences, I'm kind of seeing the Surly Krampus as a descendant of these bikes.........
29" wheels, wide rims & the ability to run tyres at very low pressures, discs rather than drum brakes. Sliding dropouts, so the ability to run the bike with a hub gear, thus making it pretty much all weather proof.
Though there is no known link between the Krampus and the Clelands they do share the same ethos as do FatBikes in general. An off-road, off-trail touring ethos. Surly and Cleland also have a similar design approach in that they are both innovators who do not follow the latest fad or fashion like the vast majority of bike companies.
When the first Clelands were designed there were very few rules constraining the design of off-road bicycles. Modern designers and their customers have many preconceptions regarding what an off-road bicycle should be and do though Surly appear to be far less constrained than most.
It is likely that future FatBikes will become more Cleland like because many of the problems experienced by FatBike riders have long since been solved by Geoff Apps designs. Perhaps the Surly Krampus is the latest stage in this evolution towards more efficient and all-weather FatBikes?
The latest Cleland news is that some bio-mechanical academics in Belgium have concluded that in theory non-round chain-ring with off-set cranks and combined with off-axis swing pedals will develop 7% more power than standard pedals and round chain-rings.. A combination that Geoff Apps has been using on his Cleland TT for the last 3 years. Of course the road-racers need to be quick in utilizing this technology before the UCI ban it.
Or perhaps the bike industry will wait 30 years before adopting this idea, like they did with 700c wheeled mountain bikes?
9/16" Suntour BMX MP-1000 pedals / 56 tooth TA 6-bolt chainring.(I'm not bothered if the teeth are worn or damaged)