Just as a follow up.
shituation:
- I bought a pair of skis that already had the shifts on them (i wouldnt have of picked shifts... ever)
- Instead of buying new bindings, i moved the heel piece forward so that it can be engaged while using the tech toes.
- while skiing, i have the toes locked on the first detent (before the bumps on the window).
- while walking, i have them engaged on the second click (after the bumps on the window).
feedback:
- transitions are good. dont need to take off the skis to go down.
- there is some snow builup on the front of the heel piece when walking with out the risers. comes off easily with the tip of your pole.
- no reliability issues so far. I skied hard on them in bounds (moguls, steeps, cliffs and even some L jumps) for at least 20 days without anything cracking blowing up or coming apart.
- havent had any pre release while skiing
- there is still some fore and aft elasticity in this configuration. not much in terms of twisting. it feels good to have improved side to side percision and some suspension when it comes to bumpy terrain.
- sometimes the toe will unlock when the skis are really getting hammered (the tab will go down, but not eject my boot) maybe once or twice a day. i frequently check the locking tab. each time i stop.
- im always concerned with the release characteristics with this configuration. i strongly do not recommend do this for the sake of your knees and legs. I did check that the boots come out, but it seems unpredictable compared to a regular dynafit or alpine binding.
Summary:
Yes you can use shifts like king pins at the sacrifice of stable release characteristics.