Sirius Satellite

Greetings,

Just hoping to get some info from any Sirius subscribers. Here's my problem: I live in Canada, just over the border from Buffalo, NY. Sirius has been approved by the CRTC (our FCC to you Americans) but for some reason or another (as yet unclear) the Howard Stern channels have yet to been placed on the Canadian Sirius option. So, I'm wondering what exactly would stop me from hopping over the border, buying my receiver there, carting it home and setting up. All I can think of would be that, as far as subscription payments go, I would have to have a US mailing address, which I imagine I could remedy simply by renting a PO box. Any opinions, suggestions or info would be greatly appreciated. TIA