If memory serves, the locking nuts have a removable sleeve to allow the "key" to fit in the end of the nut. As such, the locking nut doesn't have the same tight fitting sleeve, just a relatively loose one.
Funny (ish) story, i removed all 4 locking nuts on mine prior to replacing the tyres. In between removing each wheel and fitting a new tyre then refitting and then going to replace the locking nuts, i managed to lose the "key". That decided me, they'd be replaced with normal nuts.
By strange coincidence, after fitting replacement wheels to my Honda, i lost the locking nut "key" and had to buy a locking wheel nut remover kit. Done one so far but the rest won't be long, been hoping the key would turn up............