Flaperons may have some applications -but it is a handsomehigh tech method of crashing a plane
I very embarressingly crashed a Cessna Centurion of all planes this way - testing flaperons.

You are bound to stall one half of the wing if you have to use the ailerons.

I do cheat sometimes when landing my 3rd scale Super Cub by feeding in a tiny bit of spoilerons on final approach to wash off height and speed, but that is a different story - Cubs are almost immune to gravity..

Cheers


Bundu