My only beef is that they're a V style engine. I know every truckhead out there wants to say they have a V8 but the inline engines perform better and last way way longer. Cummins should've taken the I6 and just cut a couple cylinders off the end as they're small engine. To answer the question, yes - I think that every SUV in the chrysler line up should get these engines. Less oil we use the better.
While I agree with this in principle, I don't think it's that big a deal. If you do the regularly scheduled maintenance on your V8 it'll last you over 200k miles pretty easily. That's more miles than most people will own a vehicle. If you plan on owning the truck longer than that you probably should look into the I6 cummins as an option. You'd have the truck for so long that the extra cost of the I6 wouldn't make that big of a difference.