  The SM Lagrangian without physical scalars is rewritten as the LO of a
Low-Energy Effective Theory invariant under a higher non linear symmetry
S_{nat} \supset SU(2)_W \times U(1)_Y. Soft breaking of S_{nat} defines a
hierarchy of non standard effects dominated by universal couplings of
right-handed quarks to W. The interface of corresponding EW tests with non
perturbative QCD aspects is briefly discussed.
