The problem I have in using reflexed ailerons for a landing is that they cause earlier air separation from the wing than flaps or a straight wing does. So just a little extra control input at the wrong time and you'll severely stall the plane close to the ground. Worst situation at the worst time with terrible results.

A good way to see the negative effects of reflexed ailerons would be to take the plane up high and try some medium steep turns. Say between 25 and 35 degrees of bank. They can snap in a heartbeat. Better to plan the approach a little farther out than you have been and slow her down. Most of the light aerobats have a fairly flat approach profile compared to other planes. You can't point them down and pull up to land unless you planned on a parachute type landing and that's a whole different story. They will float a long ways with the speed obtained in the steep approach. There's always the use of slips as well.