And as for ANY aero structure, whatever it is, it's not going to be adequately described for every airplane in just one short sentence. A one line sound byte isn't going to cover how flapperons work for every airplane. Cambered wings often respond differently than symmetrical ones to what's hanging back there on the TEs. Tapered planforms already tip stall naturally, and things like flaperons often just make that worse. High wings sometimes respond differently to flaps/flaperons/spoilerons quite differently than low wings.

Are flaperons "ever a good idea?" Yeah. Depends on a lot of things.

On a tapered planform, low wing Strega, they just might increase the tip stall a tapered wing often does naturally. Wing loading also affects things. Does that Strega already need a bit of extra speed landing to be comfortably safe? Does it stall out of harder looping maneuvers?

The real beauty of our hobby is that we can rig almost anything in our models with just an evening or two's work, and then go test at two mistakes high. And it greatly increases the fun we already have with those little suckers.

Are you going to have to rig something special on a Strega to get spoilerons? does it already have a setup for plain flaps? split flaps?