I think most use flaperons. If you need differential ailerons to correct poor rolling you can adjust the endpoints to make the plane roll straight. I also use spoilerons but not it the truest sense of the term. I use the flaperon mix to make the ailerons go opposite direction of the elevator and spoilerons to go the same direction as the elevator. I usually start at 50% mix and adjust from there. Be very careful when first experimenting with these mixes. They can make the plane do some weird things! Personally, I'd do without them till you get very comfortable with it. I have damaged several planes due to having spoilerons on and not realizing it till too late. Spoilerons make it much easier to harrier. Once you get the corrections down you can leave them off and harrier with less risk. Spoilerons also help with elevators and for some planes, walls.
Good Luck, Matt