One sees quite a few of the Isuzu's running around Los Anchorage, even in winter. Different box setup than yours, though.
If you're going to be chasing the snow to go snowmobiling, while it depends on where you are going to (and from)....just bring the chains. The major roads will be maintained to some degree at least and if you have chains, I suspect you'd be able to navigate any secondary roads to your drop-off point. In 20+ years of sno-going, I only had trouble twice with my 4WD pickup: Once in the parking area near Petersville and once on an ATV trail near Big Lake that I convinced myself was simply a snow covered access road. Chains would have saved hours of time and buckets in either situation.
