Yes all Hitec and Futaba servos by factory default run in the opposite directions. This can be successfully done using two similar sized and performance servos of different brands and I have done this in certain flap installations not flaperons and this should never be done in the case of two ailerons servos or two elevator half servos. Using two different brands within the airplane that are just single servo functions is perfectly fine. Depending on the receivers used you may have to shave the plugs tab from the futaba servos.

There are other ways to acheve servo reversal beyond internal electronic reversal (which is not all that practical for most of us) and it involves linkage set up and or servo positioning.

So exactly what servo (function) is the one you need reversed?

John