The issue/s that I was speaking to would be any thing that one might run into with PU's/evacs. in the far north, where real time verbal contact would be more utilitarian than a email or text message....not with spot its self that I am aware of....but I have not done that research MT...so for me it is more of a timeline driven rather than a device issue due to the more substantial distances and therefore time of travel in that neck of the woods...I would still use the spot but I would also have a sat phone to accommodate that concern of mine; and I do not have that concern in the BW.  ;)