Living in Fairbanks, I routinely shift in and out of 4H at speed. Usually only need it around town at the lights and on on-ramps, but once you get in a parking lot or on the highway, you don’t—turning ability and just not required being the reasons. That said, last year, the highway was made of ice, so I might have left it in, but still drive around 50 or so. Seems odd, but there’s a decent amount of grip due to the rock they put on the road. I’m from Arizona, too.