Indeed - I pair program for much of the day with different people on the same team, and there is only (recently) one city which has two people in it. The notion that pairing need take place physically in the same room is just not correct.
I'd argue pairing is BETTER remote where you both have comfortable access to all your screens. While one person is writing production code, the other can be googling/writing repl style experiments/whatever and in easy communcation while they have the person writing code up on a second screen or at least a background window easily brought back to the foreground.
