It makes logical and aerodynamic sense NOT to use ailerons very close to the stall...We all know that ailerons change the AoA of the wings and so if you are happily flying at max AoA (say 17 degrees) on both wings, nicely balanced and you put an aileron input to the right, then the left wing AoA could exceed max AoA and the right wing could be below max AoA. In this instance the left wing will stall and the right wing won't. Using aileron to further try to pick up the left wing will exacerbate the situation and the roll will continue.
We are into the fine tuning parts of the discussion here...
Everyone probably knows and agrees that a large aileron input close to the stall will often make that wing stall, and that an aileron in a stalled part of a wing will work in the reversed sense in that regard (aileron down on a wing will cause that wing to drop, not rise). I just do not agree that it is therefore a logical conclusion to not use ailerons close to the stall.
The argument against that conclusion is that in a wing with sufficient washout the part of the wing where the ailerons are mounted are not so close to the stall that they work in the reversed sense, even if the airplane as a whole is stalled (i.e. vertical damping and/or pitch stability is lost). Ailerons on modern certified aircraft (and on many others, although not all!) will work in the normal sense even in the stall, and certainly just before the stall. We just should not use sudden large aileron inputs very close to the stall, or try to pick up a wing that is already dropping using ailerons (if we already have uncontrollable roll due to loss of roll damping we will most likely have lost aileron control as well).
We don't have to use rudder and slip since we still have aileron control, and using ailerons is both a more efficient, faster and safer way of doing it IMV.
I think it is interesting to note that in the C172 the recommended control positions for spin entry is ailerons neutral or a slight aileron input into the spin (e.g. full right rudder and neutral or slightly right aileron into the right spin). Even in the spin entry the ailerons work in the normal sense.
Couldn't say how it works in an Extra.