I enabled the rev A in EPST, rebooted and ran iota and got pretty slow speeds. Set it back to disabled and rebooted and got rev a speeds after that. 1156/307 which isn't bad. Was getting about 576 down with it enabled. This is no where near the max Rev A download, but its an improvement.
I am tethered to an XP pc using ICS on the Mogul and the stock ROM. I am in the DFW area which does have revision A.