I have only the Norse Hawk. With a 23" haft on it, I expected it to be a 2 hand tool. The way it is balanced though, it is still a 1 hand axe, just with some reach on it. If you use 2 hands, you sink it far enough that it sticks, so ends up slow going.
I have noticed that the Norse Hawk doesn't track as well on imperfect swings. Due to all the weight being in front, it has a tendency to twist if you are not really careful.
I did like the axe for the extended points, which make it nice to throw, and to hook with. Using a longer haft on it does give more reach, which is nice. It also makes it a much nicer tool, as the swing is much better.