In FTC and VEX land we run split arcade but for holonomic drives, to keep the driving controls mostly the same regardless of drive system, we add a fairly large deadband on the LH joystick X value so Y being forward/backward is "preferred" and left/right movement is available when required plus RH joystick X value for rotate allows for some fun driving.
This scheme in action:
http://www.youtube.com/watch?v=ClGWg43TtCI
Might be handy since it's looking like FRC will have many holonomic drives this season.