I have just put normal nuts on mine as i think in this day and age with nearly every car on the road having alloys they are just a waste of time
I looked after mine as well but it didn't stop the locking wheel nut from splitting, so ended up replacing with standard nuts.Why change them? I know a lot of people moan about them but if you care for them like the engine they'll be fine. Mine are copper slipped and they are taken off every 2-3 months, either at service time or oil change. The only problem ive had in three years is when i lost the damned key. Brought 3 new ones and then the original turned up. I always make sure the key is never used with an air wratchet as I take the nuts off before it goes to the garage for anything and I always torque them up.
Mine came with wheel locks as factory fitted, without them my insurance would be void so have to have them ona new set of wheels and tyres off the insurance.