IF you have electricity to keep a block heater going for days at a time, then maybe diesel makes sense if you have a need for the towing power. If you plan to live off the grid, I would forget about diesel. Diesel has been more expensive than gasoline for the past few years.
For Alaska, if I had a choice and wasn't towing a large trailer everywhere I went, I would go gasoline every time...JMO
Don't live up there, but it's damn cold here and I've started my Cummins a few times in -18 to -20 below without being plugged in and it's fired right up (use synthetic 5w-40 and treated fuel of course).
