Now I think about it I do not think I have flown any symmetrical aileron S2s. Does it make that much difference? It certainly does not on an S1 where I remember being very disappointed many years ago when I tried one against my friese aileron S1e. A bit better only I thought.
Either way I am sure that an Eagle would have no substantial difficulty with the present Advanced sequence which is a great deal easier than such sequences were 20 years ago when friese S1s and S2s were the norm.