The spoilers on the F-14 Tomcat are used for roll control, at least at lower speeds, as no ailerons are fitted to the main wings. Still, I assume the primary roll control is provided by tailerons.

I have flaperons/spoilerons mixed into all my planes on my flight simulator and on my 48" Extreme Flight EXP. There's even a note about adding the mixes to a 3-pos. switch in the 48" EXP manual. These cases all refer to adding an extra dynamic to an already highly capable aircraft, not making adjustments for landing or poor landing approaches on poor landing surfaces.

I admit to landing with flaperons active, including using them to pull right out of a touch and go. They do drop your stall speed to absolutely nothing, but at the expense of virtually all your stability. At the point of stall, the plane behaves more like it's hovering, where prop wash and torque take over. Not exactly a winning configuration for newer pilots like myself to use for consistent landings.

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That said, I typically don't even bother with flaperons and spoilerons, though it's still setup in my Tx. it only adds to the pilot workload managing the 3-pos switch, adding the mixes to your pre-flight check, and the fact that they only add to the required skill set for a given aircraft (as opposed to doing anything to assist in learning new skills or becoming comfortable with your plane)