nope.
telling a woman what to wear is never ok.
if they ban it for "security reasons" you re banning the rights of a woman. you are being anti feminist and anti woman. most women who wear niqab in the west do it because they want to. so why ban that in fear of a man dressing in it (which is super rare)
I get the security argument, but I'd still be inclined to respect people's freedoms unless abuse of the niqab/burqa becomes SUCH a widespread thing (which it is not).