Having just bought mine, I'm pretty much going to stick with it. At the end of the day, I need the truck, but I don't need it every day.
With the EcoDiesel RWD, I got the most fuel-efficient pickup truck on the market for a reason, it's actually the most fuel efficient vehicle I've owned, and that includes the disappointing mileage I was getting in my outgoing CX-5 GT. For some reason, I couldn't even pull off 27mpg on the highway, level ground, 70mph on cruise control. IMO, the Ram ain't a bad choice.
Now, IF gas/diesel prices went up to $6+:
First: I'd ask my boss for a raise to justify the drive.
Second: I'd go ahead and sell my Nissan Frontier and replace it with a cheap (used) BEV or PHEV commuter.
I need about 50mi of range, daily. I'd keep the Ram and use it only on days I need it, I could shuffle cars with my wife, who works from home. I'd get a used Leaf or something that only has about 65-100mi of electric range. It would be a single-purpose vehicle and I'd probably spend time charging it on solar (I have a solar-powered trailer that I could juice up to 2,000W for about 6 peak daylight hours).