I do not think a law could be drafted and enforced that banned such a garment.
There could be localised security restrictions, as with crash helmets and hoodies.
Like McGrath, many of us would challenge such a law because it would violate one of our basic values.
A person has the absolute right to choose, BUT everyone else has the right to criticise that choice if they disapprove.

The problem seems to me to be that Muslims think that their beliefs are not open to discussion, question or criticism.
They want the freedom to deny freedom of speech.