I am unsure why we are talking about 'if and how' a Crewman can move about; it will only be about money and the logistics will have to fit around the cost. Bye-bye PU, Gz, Wc, Me and hello niche - whatever that is? It will be the cheapest option and for me the Bh is a strong military contender and the 159 a less safe bet due to its non-military credentials.