I know in 2009, team 1983 Skunkworks used swerve drive. They didn't have continuous-turn potentiometers, and so when they needed to turn past a certain point, they would flip the module 180 degrees and reverse the direction of their drive motors. It worked surprisingly smoothly, but that may be in part due to the low coefficient of friction.
Here's a drawing of their drive base:
http://www.chiefdelphi.com/media/photos/32444