Thanks for info.
I think getting 2 separate SIMS would be better than 1 then using roaming, if i get a big call (which may happen as I do tech support) then roaming charges will mean big $$.
Can anyone see a problem with this offer by Cellularabroad?
Both SIMS shipped together to my hotel in Hawaii.
USA SIM $59 via JOLT:
http://www.cellularabroad.com/usppsc.php
Canada SIM $49 via Rogers:
http://www.cellularabroad.com/canadappsc.php
Thanks for this help its great to talk to people who know the industry so well.