^Good thoughts about #1, though the main complaint from people (and being a former T-Mobile user, I'm inclined to agree) is USA coverage leaves a lot to be desired. I used to be in places with X coverage and my g/f on her Verizon phone would have 2 bars or more. Otherwise, obviously the best of both worlds, but he originally had T-Mobile and switched to VZW for just that reason.
2. Another good suggestion, though still just as "broken" as my ugly work around IMO.
I was just wishing there was some hidden way to associate a single user to multiple BlackBerry's. I know it's a pretty strange request, but if either T-Mobile had better coverage in the USA or Verizon had ANY coverage anywhere we travel outside the US, it would be solved.