Except of course that it doesn't work everywhere. Two of the major carriers here in Canada (Telus and Rogers) block VPN unless you specifically pay for it as an addition to your data plan. If you don't have the option on your plan the VPN session will fail to authenticate with an error stating that the connection to the remote server cannot be established.

I've actually heard an answer to this. I attended the Intel channel partners conference this year, a Microsoft rep explained the "Server 2008 r2" was so named because they felt that IT managers were afraid of change. Because Server 2008 had a fairly good reputation they decided that calling the new product R2 would convince IT people that it was an upgrade to the product they were already comfortable with.