Towing with the LBZ is a lot of fun, especially coming from a gasser. I remember our first trip west on I80 from SLC to California. I kept thinking, "surely, this next grade will make it downshift ... nope" Cruising up grades at 65 mph in 6th gear in cruise control was certainly a cool experience. It made me want to plan trips that would include climbs up "notorious" grades, just to see how it would do. Every time, it was just uneventful ...
Towing mpg was mostly between 10 and 12 mpg for us, with a couple outliers for unusual conditions or atypical speed.