Using Allah's name is not common speech, jno. And Clarkson is hardly likely to say 'By the beard of the Prophet!', a quaint exclamation which I remember, from my youth, being ascribed to Muslims.Maybe Muslims do blaspheme and did, or do, use the name of Allah or those very words in their own languages. No doubt if they do they give rise to the same debate we are having (or none, where the ultra religious are in power and the religious police are active).
The point is , whatever the religion, is it offensive to a very significant number of people or is it generally accepted as ordinary speech ?