I still think it's fine to give dolls to boys,train sets to girls etc,but I know from experience now that they gravitate towards their stereo-typical toys anyway. My son always headed for the cars, in the playgroup,and my daughter,deliberately brought up not to be a girly girl,would find the 'my little pony'.
I honestly used to think they were the same but they're not ,and I don't see any problem with that.The answer is surely to treat them the same but get what they will individually most enjoy.