Considering all the people who've managed to subscribe to BEV and StarChoice from the US, and all the people who've managed to subscribe to DirecTV and Dish from Canada, and fought all those battles...
...oh, and all four in Mexico, too!
A lot of threads have been posted on the subject.
I'd say subscribing to Globecast would be trivial...
They let you pre-pay for a number of months.
There is no discount on multiple receivers, so there is no account-sharing, so they're not paranoid about that...
I haven't seen any posts on the subject, so either I've not looked or not noticed (that's certainly true), or it's too trivial to even talk about.
Maybe someone has first-hand info...?