I travel quite a bit, (phillipines/singapore/Indonesia currently)
and because I prefer to not be flinging SIM cards about
and because I always have 2 n900s on at all times,
I got one of those portable 3G-GSM - WiFi hotspot gadgets
to address the need for top-speed access.
That also keeps the roaming charges down to just voice/sms.

My only regret about buying the n900 is discovering
the fact that it will still be another year or two
before anything appears to surpass it in the
GSM phone has keyboard runs linux and can be hacked category.

Android is about as much linux
as Rowan Atkinson is a good stand-in for Chuck Norris.