Siri in Iphone 4S: can it be used by english-speakers anywhere?

Can see no technical problems using Siri to perform tasks, especially internal ones, in a non-USA/Canada/Australia/UK networks.

Will this be possible immediately upon purchase here in Sweden?

If Siri currently goes beyond simple imperative sentences, "Open web"; and handles complex commands with many arguments or

constraints is of no importance as regard to the network. This is true with the constraint that there is a corresponding function on which

the command can be mapped as to arguments, parameters, and constraints.

So use in different networks would be OK. Of course some nets have restraints as to which facilities are offered. So for example if camp-on is

not available, then repeated try method can be used instead.

Hoping for reply to my primary question.