Park n Shop,
What Pontious said about commuting is not exactly correct. If you live in Australia or NZ then the schedule works out OK so you can generally arrive in Japan on your first day of work and depart on your last day of work. But for North Americans and especially some of the European guys they continually get shafted and can't leave Japan until the next day. Usually they are on STBY on the last day and the company won't change the STBY times so they can leave on the lunch time flights home. Being on STBY on the last day of work is purely a draconian way of stopping guys from going home early when there is no work for them that day. There is no way they will ever call a guy out on STBY on his last day of work.
As for your comment of commuting days either side of the AJV 11 days or the AJX 10 days off - they do NOT exist. Not sure where you got commuting days from. 11 or 10 is all you get. You commute to and from Japan in YOUR own days off!!!