I realize this. However, my comments on the Sioux traveling well are based on what I've seen from the frozen four in Milwaukee, the old holidays tournaments there, # of visiting fans at Madison regular season games, and what I've heard from friends who have travelled to regionals. Also, my perception has been that at the old WCHA tournament, there were A LOT more Sioux fans at tournament games their team was not involved in than Gopher fans. Now, maybe, it's just that the ND fans living in the TC happen to be bigger overall hockey fans than the gopher fans living around the TC; but my guess is that the cause of that was a sizable contingent of ND fans who made the drive, purchased the whole package of tickets, and decided to attend anyway (as opposed to simply scalping/being able to stay home).
Others have probably travelled to more venues than I have; but, from what I've seen, North Dakota fans do travel as well as, if not better than, any fan base.