After about 30 slides your edges will be plenty 'detuned.' And yes, the edge under your boot is very important...its give and take, would you rather have good edge grip in icier conditions (remedy, dont ski ice) or slide rails?
'I would be embarrassed to constantly complain about my life considering all the freedom and opportunities we have today. People that can't find anything they enjoy in life simply aren't giving it a real try.' ~Nick 311