In my experience with the beta, I decided that come launch I wanted to create characters for all four classes under one single faction. I went with this, however the character I loaded the items on is in the incorrect faction, not adding to the fact that I can't view things like treasure maps on anything other than the first character I used?
In my personal opinion, things like that don't make sense, they should just be non-tradable, but bankable (or something along those lines). Why limit items that I've purchased through the early editions to only a single character? At the very least, leaving some kind of larger notice in-game that these items will only be usable on the character you claim the on would be nice, because now I have a character I want to delete with the items that I can't move.