ElCaminos and Rancheros were NOT 4x4s...believe it or not my Grandfather's farm in ND was serviced by trucks that did NOT have 4x4 drives...in his day, if a truck got stuck, they pulled it out with one of the tractors or if it were really stuck then they used the CAT crawler...Well, I guess I can see some El Camino size comparison. Not quite a Silverado - maybe a Colorado. I don't see this replacing your Duramax.
It's probably more of a Model X chopped. I surely don't see it as either a hauler or an off-roader. Most of the Silverados at the dealer aren't haulers either. The beds are too short. This is how mine looks (add chrome tube side assist steps, window tint, 4X4 decals, raised white outline tires [old school] and a soft tonneau cover).
Here is a MotorTrend comparison...
Nah...the DURAMAXES are safe...like I said they are the real workhorses around here...