I use the ACT Fuzzy Pro on the elevons of my Typhoon. It is aligned for ailerons only. I would not use a gyro on the elevator function and definitely not use the same gyro for both pitch and roll. You should not need a gyro on pitch. If you tilt the gyro's axis to give you some roll and some pitch information, the gyro will read roll and pitch as the same thing and give the same output - always move the elevons as ailerons or always move them as elevators! It will not magically know when to apply aileron or when to apply elevator, it is designed to apply just one, so either it will make the plane roll when it pitches, or pitch when it rolls! So, technically it will not work and you should not need a pitch gyro anyway therefore I suggest you stick to using the gyro on ailerons only or ailerons and rudder.
H