RE: Flaperons/Spoilerons
Nope... there is so much lift with the wings that spoilerons don't increase flight speed appreciably.
It does kill lift when you need to do so, permitting the plane to land in a very tight spot.
He can also fly without wheels so rollout doesn't factor in were it to be a problem anyway.
I've flow this plane this way and it can land in a 10-15 ft, area when done properly.... but it takes practice to do so.