I personally would try to get recreational vehicle insurance on one once i get one, if this helps clear up questions about importing to canada, from what I understand and I may be wrong but basically (and I mean very basically) a U.S. citizen can buy one, but if that citizen decides to drive it out of the country that is fine, but when they decide to return home, they most likely will not allow it to re enter the U.S. that is just what I have read about them, there are lots of sites if you google search for more info, also, once it's in canada I have no idea what happens from there on your end. no idea how hard it would be to register it up there etc. hell, if I lived up north instead of arizona Id offer to help pick one up for you..
to the OP, thanks for the info, how do your lockers work for you? any good?