A huge expense in EVER having a twin seat version in the first place. It was only done because no one had the guts or the hard evidence to prove that the synthetics would be good enough to meet the modern safety case.
Oh, and to allow certain of the high priced help to get to fly it without putting in the hard hours (and clogging) ground school.....
Oh, and to allow the marketing campaigns a chance to do the same.
Tarnished