Seperate inboard flaps have some advantages over flaperons, such as being more stable (washout effect), you retain all your aileron deflection (no mixing with flaps using up part of the aileron deflection), and being realistic for scale applications. An advantage of flaperons might be the convenience in setup (with servos mounted to each aileron, no extra servo mounting or linkages, just plug each servo into aileron and flap channel, turn on the flaperon mix and tweak with a computer Tx).