I am designing a utility / sport jet and am going to use a thick symmetrical airfoil. I would like to keep things simple, and am considering full span flaperons, ie, dropping the ailerons maybe 20 to 30 degrees for landings.

Question: will this be OK or am I better to go with dedicated Ailerons and Flaps?

Please no "armchair theory experts" I would like to hear the opinions of those with some actual design and/or flight experience...

Thanks,
Andrew Coholic