On April 18, Verizon finally shipped the Verzion 4G Novatel 4510L modem, and I upgraded right away from my 3G modem. I am on a bus now riding to Seattle, then taking the light rail to the airport. How fast is my 4G modem on a bus on the freeway? Speedtest results.
Many of my travelling friends use the Verizon mifi 3G modem, so I expect them to upgrade soon.
I don't know about you, but I am totally frustrated with free internet in hotels and conferences. The bandwidth sucks too many times. I've gotten as high as 12Mb down and 8 Mb up on my 4G modem. For the monthly subscription fee, this is a no brainer.
Here is the Verizon web page. I held out for the Novatel modem, passing on the Samsung.