Although the article IS interesting, I think the most important point was saved for last...

"All this is fine for medium-sized cities like Baltimore and Portland. But I'm hoping that we'll see these speeds when 4G gets to large cities   especially New York."

Until we can see decent 4G speeds...in LARGE cities like LA or NYC, and see WiMAX deployed far more robustly than it has been, I know I won't bother with buying any 3G modem, let alone a 3G/4G version.