I've got a Talon working with my Leonardo using the servo Sweep example. I also tried it with the Jaguar with much success! You may need to calibrate the speed controller but to do that you must write a code which sets the limits for a little over one second each. Here's the calibration loop I used:
This is assuming your servo object is named "servo," of course.
Let me know how this works out.
PS: also, does anyone know how to input something like a USB joystick and read an axis with the arduino?