We are still limited in power (except we are allowed to gang up an unlimited number of them), but as long as they are COTS and unmodified, you can use continuous rotation servos.
**<R52> **Motors specifically permitted on 2010 FRC ROBOTS include: [LEFT]A. All motors, actuators, and servos listed in the 2010 KOP, [/LEFT]
B. An unlimited number of COTS servos with a maximum output torque of 55 oz-in and maximum rotational speed of 100 rpm at 6 Vdc (e.g. HITEC model HS-322HD or HS-325HB servos, as provided in the KOP),