And anyone knows not all laws will appeal or seem fair by everyone. However they are to be followed..period.
That said I just came back from shopping and witnessed at least two ladies who were violating the rules, and that too out in the open. So quite clearly it's not really a strict law.
Personally I must add I do find it quite unfair on Non Muslims being told what to wear. Kinda like telling them not to eat and drink in public in Ramadhan. And I feel that by imposing such regulations the chances of niqabs/hijabs/beards been banned increase as well. However that's just my opinion, and I can only assume the lawmakers must have some wisdom in why they do what they do and have plans as to how to counter any backlashes...at least I hope!