Alaska Utility Guys  

What part of Alaska?

The big difference in "where" is moisture.  That it will be cold enough to kill you overnight is given.  But will it be a below zero dry cold, or a rainy 33F cold.  If it's a dry cold, you just need good old fashion wool and layers.  If it's wet you need raingear and layers.

For boots, a pair of insulated xtra-tuffs with good insoles will get you thru the night in both conditions.  Might have to walk around a bit in the super cold dry areas.