While I agree with what went down here, I will have to add that the controllers at IWA are a bit strange and can fly off the handle at the smallest thing.
Me - "Gateway ground, (call sign) with information Sierra ready to taxi for a northeast departure"
Ground - "(Callsign), taxi to runway 30L via B, N, do you have information Sierra?'
Me - "Yes Ma'am, we have Sierra"
Ground (in a condescending tone)- "(Calllsign), you must use your call sign in every communication!!!!!"
Me - Roger, if you would have heard me say I had Sierra in the initial call up we wouldn't be talking about this now, would we?, (call sign)"