I haven't read every post, so excuse me if this is already covered.
Some one will set up a 217 organization that will cater for these type of machines. Much cheaper than employing your own check pilot, has to be better than a CASA FOI who in reality will probably have no practacle experience on the types mentioned.
If there is one of a kind aircraft it won't be cheaper, possibly higher quality, more than one of a kind and there are $$$$$$ savings.