I sorta feel that Arabs should be weary about using allahs name as the name for God (the Christian/Jewish God of Abraham), because it is the name used by people who are worshiping a god not of the torah/gospel?
But, at the same time, we call Yeshua Jesus, and I know that God is the cause of of the division in languages with men. Im sure that if their heart is with Him, He is not unhappy about it.
Im sure that even though allah is the name muslims must use for their god, it can also just be a word that means god as well. Haha Im no expert, Ive just heard that muslims are told they have to call their god allah, and not just god. It makes it feel more like a name than a title, I guess.