TUPE - yes that old favourite, there are 2 sides if not more to the pros and cons of that particular arrangement, and please bear in mind that the choice is often transfer to the new company or leave, it also leaves the new compnay with the logistical problem of different contracts etc etc, with regard to how staff think whilst wearing a particular uniform, it depends on the circumstances, if it is a tough situation, then like you say they will point to the pass and run a mile, but if they want to boast, brag, impress call it what you may then believe me they will say they work for.......... the airline.