For those wondering if Verizon's LG Dare can take advantage of fastest Rev-A speeds, I can assure you it most certainly does!
Here's a speedtest using Verizon LG Dare tethered to my MacBook Pro, using VZaccess Manager:
Minutes later, same LG Dare operating attached to my Cradlepoint CTR350:
Keep in mind, your test results will vary based on type of cellular coverage, and signal to the tower.
I just happen to live nearby a very well fed Verizon Rev-A tower, and testing was done with excellent signal using a wireless repeater in my home/office testbench.
-- alex