Just so I'm clear on this, to use a gyro for the "aileron" only function of elvons (i.e. one mixed control suface on each side of a delta wing configuration), you install the gyro between the rx and servos and orient the gyro in the roll axis. You would obviously need a gyro with two channel inputs/outputs, one for each side. Then just make sure the servos react in the correct direction and you are good to go? Presumably the "elevator" function is unaffected?

Craig